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The need to upgrade industrial equipment is great.
The need to upgrade industrial equipment is great.
A、change
B、rise
C、reduce
D、improve
正确答案：D
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The authorities do not consider it appropriate to incur large amounts of external debts until anumber of practical bottlenecks in the economy have been tackled.
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操作人员对设备要做到“四懂三会”，其中“三会”是指会操作调整、会检修、会处理故障。