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9901
D/A转换器是把输入的数字信号转换成与之成比例的模拟信号。
9902
按材料的燃烧性能等级划分,下列材料属于A级耐燃性材料的是()
9903
150板平法施工图中4~5轴的A~B轴区域楼板的板底钢筋短边方向为()。
9904
如果线性微分方程组中的A及F在区间I=上连续,则对于上任一点以及任意给定的Y,方程组的满足初始条件的解在上存在且唯一。()
9905
某产品销售员把相同的竹凉席以80元的价格卖给顾客A,以180元的价格卖给顾客B,该种定价策略属于()。
9906
音频ZCY7-1的调性是a和声小调。()
9907
将模拟信号转换成数字信号的电路,称为模数转换器,简称D/A转换器()
9908
假设一个经济的生产技术为柯布道格拉斯生产函数。其中劳动与资本所得各占总收入的1/2,而且A等于1,如果劳动力增长率为0.06,折旧率为0.04,储蓄率为0.2,那么在稳态下,资本-劳动比为()
9909
A、变加速直线运动,加速度沿x轴正方向
9910
点电荷-q位于圆心O处,A、B、C、D为同一圆周上的四点,如图所示.现将一试验电荷从A点分别移动到B、C、D各点,则()
9911
A、线偏振光
9912
按照综合项目1的要求,a=2,b=3时,7米的梯子够用。()
9913
多酸催化苯酚和乙酸反应制备双酚A体现了多酸的()。
9914
木疙瘩中对a进行开方运算,用到的表达式是()?
9915
当患者胆道完全堵塞时,因胆汁不能进入肠道,粪便是()A鲜红色
9916
某企业同时向两家银行提出了100万的信贷资金需求,两家银行给出的贷款利率、放款时间、担保要求是一样的。A银行的客户经理第二天亲自到企业上门沟通和指导办理,B银行的客户经理通知客户第二天到银行营业网点二楼办公室详谈。从顾客让渡价值的概念,A银行客户经理与B银行客户相比:()
9917
规划法规系统为规划活动提供了(A)和(),并决定了城乡规划体制的基本特征。
9918
分布在马山东坡,马山极顶下,为(A)与()的接触变质带。
9919
假定A国某居民公司在2019年纳税年度共取得总所得100万元,其中来自于A国(居住国)的所得是60万元,来自于B国的所得为40万元。A国的所得税税率为30%,B国的所得税税率为50%。B国政府给予外国投资者税收优惠,税率减半征收。A国对B国的税收优惠进行税收饶让。则该公司应在A国缴纳的所得税为()。
9920
条约的保留在于摒除或更改条约中的若干条款对该国适用时的法律效果,该项制度适用于下列哪个条约?()A.双边条约
9921
A银行的债务比率为50%,B银行的债务比率为0,假设两家银行的资产收益率、资产总额相等,税率等其他外部条件均相同,在经济衰退时期,A银行的经营风险通常比B银行经营风险()。
9922
A/D转换是将模拟量转换成数字量,DA转换是将数字量转换成模拟量。()
9923
A/D转换器ADC0809是()位二进制A/D转换器?
9924
对于电流输出的D/A转换器,为了得到电压的转换结果,应使用由运算放大器构成的电流/电压转换电路。()
9925
进行萃取操作时,一般应使溶质A的()。
9926
在一连续干燥器中干燥盐类结晶,每小时处理湿物料为1000kg,经干燥后物料的含水量由40﹪减至5﹪(均为湿基),以热空气为干燥介质,初始温度为20℃,湿度为0.009kg水/kg干空气,离开干燥器时湿度为0.039kg水/kg绝干气,假定干燥过程中无物料损失,水分蒸发量W(kg水/h);(A.368.6kg水/h;B.400kg水/h);干燥产品量(C.600kg/h;D.631.4kg/h)(kg/h);空气消耗量L(kg绝干气/s);常压下工作时,风机的风量Vs(E.2.87m3/s;F.3.70m3
9927
在常压干燥器中,将某物料含水量从5%降到0.5%(均为湿基),干燥器生产能力为1.5kg/s,热空气进干燥器的温度为1270C,湿度为0.007kg/kg,出干燥器时温度为820C,物料进、出干燥器的温度分别为210C、660C,绝干物料的比热容1.8kJ/(kg·K)。若干燥器的热损失可忽略,试求绝干空气消耗量(A.6.63kg/s;B.13.26kg/s)及空气离开干燥器时的湿度(C.0.0178kg/kg;D.0.0356kg/kg)。
9928
若维持不饱和空气的湿度H不变,提高空气的干球温度,则空气的湿球温度(),露点(),相对湿度()。A.变大,B.变小,C.不变,D.不确定
9929
离心泵将低位敞口水池的水送到高位敞口水槽中,若改送密度为1300Kg/m3,而其他性质与水相同的液体,则泵的流量()、压头()、轴功率()。A.变小B.增大C.不变D.不确定
9930
新生儿窒息的ABC复苏方案中,A代表什么()。
9931
我国隋唐时期的()对于缺乏维生素B1引起脚气病,缺乏维生素A引起的夜盲症都有深入的研究,被后人称为“药王”。
9932
设I0,I分别为入射光和透过光的强度,吸光度A的定义式是()
9933
牛易患创伤性网胃炎和心包炎的原因是()。A牛的网胃和心包结构易受细菌感染
9934
在学校里见到校长时我们的称呼是()A、名字+校长
9935
A群乙型溶血性链球菌感染后引起肾炎是由于()。
9936
由A局向B局敷设光缆时,正确的布放方向为:A局机房←A局进线室←A局局前孔←→B局局前孔→B局进线室→B局机房()
9937
2020年12月31日,A公司有关科目余额如下:“工程物资”科目的借方余额为100万元,“发出商品”科目借方余额为300万元,“生产成本”科目借方余额为200万元,“原材料”科目借方余额为50万元,“委托加工物资”科目借方余额为40万元,“材料成本差异”科目的贷方余额为20万元,“存货跌价准备”科目贷方余额为10万元,“受托代销商品”科目借方余额为150万元,“受托代销商品款”科目贷方余额为150万元,则2020年12月31日,A公司资产负债表中“存货”项目“期末余额”的列报金额为()万元。
9938
血小板膜糖蛋白Ⅱb/Ⅲa(GPⅡb/Ⅲa)复合物与下列哪种血小板功能有关()
9939
正确分类是规范处置医疗废物的基础,下列分类错误的是哪项?A
9940
甲型肝炎传染性最强的时期是()A黄疸期
9941
DNA双链中,碱基A-T之间以三个氢键相连,G-C以两个氢键相连。()
9942
一组数据:5,7,7,a,10,11,它们的平均值是8,则其标准差是()
9943
某同学为了探究pH对人唾液淀粉酶活性的影响,设计了如下实验步骤:①在A、B、C、D、E5支使观众分别加入pH5.0、6.0、7.0、8.0、9.0的适宜浓度缓冲液5ml,再分别加入质量分数为1%的淀粉液1ml。②各试管中分别加入适当浓度的唾液稀释液1ml,摇匀。③将5支试管放入70℃恒温水浴中,保温时间相同且合适。④取出各试管,分别加入斐林试剂2ml,摇匀。⑤观察各试管溶液的颜色,通过颜色深浅判断唾液淀粉酶作用的最适pH。上述实验步骤中有2处错误,请指出序号(不考虑试剂的浓度和加入量、pH梯度以及实验重复
9944
Hbase是一种哪种类型的数据库?()A关系型数据库
9945
假设a是int类型变量,并初始化为1,则下列()为合法的条件语句?
9946
在使用EPLAN创建PLC原理图纸时,输入输出信号模块的地址默认为E/A表示,可通过设置调整为我们常用的()进行标示。
9947
判断a是否等于1的时候,编写的正确的语句是()。
9948
若有说明:inta=2,*p=&;a,*q=p;则以下非法的赋值语句是()。
9949
绩效责任书一般按年度或(A)签订。失,企业应有一定的()
9950
有一项年金,期限为10年,每年年末支出金额为20万元,按年利率6%计算,则该项年金的现值为()万元。[已知:(P/A,6%,10)=7.3601]
9951
A大调的正三和弦为A、C、E。()
9952
a=np.array([1,2,3,4]),b=np.array([2,2,2,2]),a+b=()
9953
“Now, I must say that I’m also attached to my phone and I’m indeed sometimes in meetings, for example, which may not always be very interesting, sometimes tempted to have a look at my messages, perhaps send a couple of messages. But I do try to do so disc
9954
Interpreting is a both professional and highly subjective activity, so interpreters can reproduce the language regardless of the any principle. ()
9955
Which of the following is the transitional expressions to draw a conclusion?().
9956
Interpreting is not a word-for-word mechanical transference; rather, it involves complex cognitive efforts.()
9957
As long as one is proficient in the second language, he/she can be a qualified interpreter.()
9958
Which of the following is not a feature of interpreting notes?()
9959
A good interpreter should have the attitude of life-long learning. ()
9960
The role of the interpreter is like a _______. ()
9961
She is a good student. 句中的good可以译为“好”,也可以译为“品学兼优的”。()
9962
A highly popular public event at which everyone – whether a child, beginner or expert –selects their own distance and challenge . 该句最佳译文为()
9963
下列哪项不属于休闲活动:()A、看电视
9964
For the inner packing which is transparent plastic wrapper, there needs to be a proper design and some colour to make it attractive to promote sales. ()
9965
We should sign a sales contract before placing an order. ()
9966
If the buyer is to place a large order, he can ask for a discount while the seller has right to decline.()
9967
There is no difference between a quotation and an offer.()
9968
The seller can cancel or change a non-firm without notice. ()
9969
If the seller are not able to supply the goods inquired, he can recommend a substitute. ()
9970
In trading activities, a letter of enquiry means a letter of inquiry. ()
9971
An inquiry by the buyer means the will place a large order.()
9972
The buyer indicates products he needs by asking for detailed information in a/an ().
9973
When an importer intends to make purchases of some goods, he sends a letter of () to an exporter.
9974
There is a steady market () your products in our area.
9975
A/An ()is a request made by a buyer for goods or service he is interested in.
9976
What kind of questions you need to care about, when you book your booth at a trader fair? ()
9977
Advertising and publicity are a dispensable part of participation planning. ()
9978
When you participate in a trader fair, you can have multiple goals . ()
9979
When you take part in a trader fair , you need to do your research on the internet to select the best show for your business development.()
9980
A trade fair refers to an exhibition organized so that companies in a specific industry can showcase and demonstrate their latest products, service, and examine recent market trends and opportunities. ()
9981
After the factory tour, you should be able to come to a conclusion about the supplier. The conclusion may be:______()
9982
How can you ask about the quality control during a factory tour? ()
9983
How can you ask about the history of a factory ? ()
9984
What kind of information you will want to see during a factory tour?( )
9985
At the end of a factory tour, the seller should express gratitude for the tour’s arrangements. ().
9986
In a factory tour, the seller can get a comprehensive understanding of the products and the production process in the tour. ()
9987
A factory tour is one of the most important parts of the assessment of a potential supplier.()
9988
() are some optional parts in a business letter?
9989
The principle of () means you have to write your letter with a “You-attitude”.
9990
Margaret Anderson, Director of Personnel has requested this report on employee benefits satisfaction.” This sentence can be used in the () section on a report.
9991
It is unnecessary to put a signature when ending a memo because there is a () line.
9992
At the end of each financial year, companies release a report on company performance, mainly about how the business ran in the coming year. ()
9993
An effective company performance should be a candid, evenhanded accounting of results against objectives. ()
9994
One of the most important goals of a company performance presentation is to build a shared sense of community. ()
9995
If it decreases in a rapid way, we can use the following verbs_____.()
9996
_______is the word for the movement which shows things up and down without a pattern. ()
9997
_______represents a percentage distribution. ()
9998
______ can show dependencies between two objects during a particular period. ()
9999
If you are at a buffet, you may start as you get your dishes. ()
10000
If you are on a business call, focus on the call when visitors approached your desk. ()
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