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12301
物体的动量变化量的大小为10kg?m/s,这说明物体的动量在增大()
12302
光以300000km/s匀速沿直线运动,光的加速度是()
12303
如果下落物体每下落一秒速度增加10m/s,那么它的加速度是()
12304
声音在常温水中传播速度要大于340m/s()
12305
s电子与s电子配对形成的键一定是σ键,而p电子与p电子配对形成的键则是π键。()
12306
s轨道的角度分布图为一球形,表示s轨道上的电子是沿球面运动的。()
12307
对于原子的s轨道,下列说法中正确的是()
12308
气相反应CaCO3(s)=CaO(s)+CO2(g)已达平衡,在其它条件不变的情况下,若把CaCO3(s)颗粒变得极小,则平衡()
12309
在21.8℃时,反应NH4HS(s)=NH3(g)+H2S(g)的标准平衡常数为0.070,则平衡时混合气体的总压是()
12310
在反应体系中加入催化剂,不能改变反应的ΔG.ΔH、ΔU,但能改变ΔS。()
12311
N2O3的分解反应N2O3(g)→NO2(g)+NO(g)是一级反应,反应速率常数k=3.2×10-4s-1。若初始浓度[N2O3]=1.00mol·L-1,则N2O3浓度减至0.125mol·L-1需()小时。
12312
测定NO2的热分解速率,初浓度为0.0455mol·L-1时,初速率为0.0132mol·L-1·s-1,若初浓度变为0.0324mol·L-1时,初速率为0.0065mol·L-1·s-1,则该反应开始时的反应级数为()
12313
已知某反应的速率常数单位是mol·L-1·s-1,则该反应的反应级数为()
12314
反应H2(g)+I2(g)=2HI(g),k=0.16dm3·mol-1·s-1,在781K时反应物的起始浓度:[H2]=0.040mol·dm-3,[I2]=0.050mol·dm-3,当[H2]减少一半时,反应速率是起始反应速率的()
12315
某化学反应可表示为A(g)+2B(s)=2C(g)。已知ΔrHmΘ0,下列判断正确的是()
12316
一种未知气体在一台扩散仪内以10.0mm·s-1的速率扩散,在此仪器内,甲烷气体以30.0mm·s-1的速度扩散,此未知气体的相同分子质量为()
12317
用温度计测得管道内流速为100m/s空气气流的温度为30℃,其实际温度约为()℃。
12318
空气在喷管内流动,喷管效率为0.9,出口流速为450m/s,对应的可逆过程出口流速为()m/s。
12319
在T-s图上,任意两条可逆绝热过程线不能相交()
12320
T-s图上定温向左的过程,压力和比体积的变化()
12321
对于不同种类的气体,T-s图上同一点的定压线的斜率相同。
12322
在T-s图上,定压过程线和定容过程线都是指数曲线,但是,定压过程线比定容过程线陡峭些。
12323
S公司于2018年11月份订阅了2019年全年的《会计研究》,按权责发生制,这笔支出应计入2018年的管理费用。
12324
S公司20×7年4月初租入一间门面房,月租金5000元,提前2个月支付。账面显示,20×7年以银行存款支付门面房租金共计55000元。按权责发生制,S公司20×7年全年的房租费用应为()。
12325
在权责发生制基础下,S公司提前2个月预付房租时()。
12326
S公司20×7年2月1日从银行借入20万元,年利率6%。假设银行每季度末扣收本季度发生的利息。至20×7年7月31日,银行累计已扣收利息5000元,按照权责发生制计算,此时,S公司的应付利息为()。
12327
设信息传输速率Rb=4Mbit/s,四进制系统接收机抽样判决器定时信号的重复频率为()MHz。
12328
无码间干扰基带传输系统的频带利用率最大为2bit/s/Hz。()
12329
When asked about your greatest strength, it's wise not to choose something irrelevant to the job.
12330
What’s Nicolas’ weakness according to his answers?
12331
I’m a reliable person. I meet all deadlines. I’m easy to cooperate with and happy to work with any team. is probably Mary’s answer to question about her ().
12332
If you can answer the interviewer's questions very well, it indicates that().
12333
What's is Q5 ‘Where do you see yourself in five years?’ mainly about?
12334
Dolores is positive towards life though she has only one kidney and is on dialysis (透析 [?da???l?s?s]) twice a week.
12335
To persuade people, we can use the following phrases: ‘You can…’, ‘You can afford to…’, “You don’t have to…’, ‘It’s easy to…’.
12336
Benefits are the facts that describe a product and say what’s special about it.
12337
It’s advisable to check third party sites to see if the rate quoted on the hotel site is the lowest ().
12338
Which country’s visa is the girl applying for?
12339
You should answer the officer's questions with as many words as possible.
12340
Whose behavior can most likely achieve a win-win, that is, to have your own goal achieved and the other party’s goal achieved at the same time, so that both parties feel satisfied and happy?
12341
Oh! Look at the time. I am afraid I have to go. Let’s (). Take care.-
12342
It's no use () me not to worry.
12343
Please fill in the blank with the correct form of the verb in brackets.Do not regret () (grow) older, it's a privilege denied to many.
12344
Fill in the blank with the correct form of the verb in the brackets.Watching TV requires that one () (stay) home, but a book can go anywhere in the reader's pocket.
12345
That was not the first time he () us. I think it's high time we () strong actions against him.
12346
It's getting dark, I'd rather you () now.
12347
Fill in the blank with the correct form of the verb in the brackets.I wish I () (know) what's wrong with my car.
12348
English verbs have () tense(s).
12349
English verbs have () aspect(s).
12350
Choose the appropriate word in brackets to fill in the blank.()(Peter/Peter's) and Mary's car broke down again, but luckily they knew how to fix it.
12351
Choose the appropriate word in brackets to fill in the blank.A book of ()(Tom/Tom's) is on the desk.
12352
Choose the appropriate word in brackets to fill in the blank.The ()(bicycle's/bicycle) shop is around the corner.
12353
Determine whether the following sentence is correct.A leg of the desk's is broken.
12354
Determine whether the following sentence is correct.A book of a writer's is very popular.
12355
I sent her some flowers for Mother's Day.The direct object of the above sentence is ().
12356
X: Shall we get something for the kids?Y: Yes. But I veto I-C-E C-R-E-A-M.Y’s answer violates maxim of().
12357
The husband coming into the kitchen in reaction to the wife’s utterance in the living room “The kettIe is boiling” is the()act of the wife’s utterance.
12358
According to Grice,()refers to the extra meaning not contained in the utterance, understandable to the listener only when he shares the speaker’s knowledge or he knows why and how he violates intentionally one of the four maxims of the CP.
12359
X: Shall we get something for the kids?Y: Yes. But I veto C-A-N-D-Y. Y’s answer violates maxim of().
12360
The husband coming into the kitchen is a reaction to the()act of the wife’s utterance in the living room “The kettIe is boiling.”
12361
It’s everybody’s right, right? In this sentence, these two rights are().
12362
The generative-transformational grammar intends to account for the speaker’s linguistic competence.
12363
Descriptive grammar refers to grammarian’s attempt to legislate what speakers’ grammatical rules should be, rather than what they are.
12364
In today’s grammar we normally say that English does not have a “future tense”. This is because in English().
12365
According to the manner of articulation, [s] is a alveolar.
12366
()s are sounds produced without obstruction, so no turbulence or a total stopping of the air can be perceived.
12367
According to the manner of articulation, [s] is a fricative.
12368
The speech sound segments that can distinguish or contrast words in sound and meaning are()s. (A()is the minimal or smallest distinctive linguistic unit in a language.)
12369
According to Chomsky, a language user’s underlying knowledge about the system of rules is called his linguistic performance.
12370
According to Halliday's theory of metafunctions of language, language has ideational, interpersonal and textual function.
12371
According to Halliday’s theory of metafunctions of language, interpersonal function enacts social relationship.
12372
According to Chomsky, a language user’s underlying knowledge about the system of rules is called his linguistic competence.()
12373
()holds that language originated from people’s imitations of animal cries and other sounds heard in nature.
12374
在一个采用CSMA/CD协议的网络中,传输介质是一根完整的电缆,传输速率为1Gbps,电缆中的信号传播速度是200000km/s。若最小数据帧长度减少800比特,则最远的两个站点之间的距离至少需要减少()米。
12375
标准10Mb/s以太网中规定最短有效帧长是()字节。
12376
假定1km长的CSMA/CD网络的数据率为1Gb/s。设信号在网络上的传播速率为200000km/s,则能够使用此协议的最短帧长是()字节。
12377
在一个采用CSMA/CD协议的网络中,传输介质是一根完整的电缆,传输速率为1Gbps,电缆中的信号传播速度是200000km/s。若最小数据帧长度为8000比特,则最远的两个站点之间的距离最多为()
12378
在一个采用CSMA/CD协议的网络中,传输介质是一根完整的电缆,传输速率为1Gbps,电缆中的信号传播速度是200000km/s。若最小数据帧长度减少800比特,则最远的两个站点之间的距离至少需要()
12379
100BASE-T:“100”表示数据率为100Mb/s,“BASE”表示电缆上的信号是(),“T”表示使用双绞线传输。
12380
由与非门构成的基本RS触发器的输入端为R、S,则其约束条件为()。
12381
某些调节酶的V-[S]的S形曲线表明,酶与少量底物的结合增加了酶对后续底物分子的亲和力。
12382
哪一种情况可用增加[S]的方法减轻抑制程度()
12383
哪一种情况可用增加[S]的方法减轻抑制程度()。
12384
当[S]Km时,V趋向于Vmax,此时只有通过增加[E]来增加V。
12385
一个简单的米氏酶催化反应,当[S]Km时()。
12386
用示波器观测50Hz的正弦交流电信号,当荧光屏上调出两个周期稳定的波形时,其扫描电压的周期是0.04s。
12387
如示波器扫描频率为1000Hz时,将扫描长度调整为5cm,则每厘米代表的时间为0.0002s。
12388
已知有函数定义:defStudentInfo(name,country='中国',age=18):print('%s,%s,%d'%(name,country,age))则下列函数调用中正确的是()。
12389
正则表达式“^ab[\s\S]*c$”可以与任一以“ab”开头、以“c”结尾的字符串匹配。
12390
已知s={1,20,25},则通过“s.add((2,3))”可以向s中添加一个新的元组类型的元素。
12391
已知s={1,20,25},则通过“s.add([2,3])”可以向s中添加一个新的列表类型的元素。
12392
下面程序的输出结果是()。defStudentInfo(country='中国',name):print('%s,%s'%(name,country))StudentInfo('美国','大卫')
12393
已知s=学习,则执行s[0]='复'后s中存储的字符串被修改为“复习”。
12394
若系统晶振频率为12MHz,则T0工作于定时方式1时最多可以定时()μs。
12395
若系统晶振频率为6MHz,则定时器可以实现的最小定时时间为()μs。
12396
在51单片机系统中,若晶振频率6MHz,一个机器周期等于()μs
12397
通常浮点数被表示成N=S×r^j的形式,其中()。
12398
Keat’s poetry, though distinctly ()in flavor, was unlike any of his contemporaries.
12399
() is one of Keat’s poems.
12400
In Hawthorne’s The Scarlet Letter, the letter “A” symbolizes apt.
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