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【单选题】
能耗制动过程中,直流电动机处于( ),将能量消耗在能耗制动电阻计电枢电阻上。A.
电动状态,将机械能变成电能
B.
电动状态,将电能变成机械能
C.
发电状态,将机械能变成电能
D.
发电状态,将电能变成机械能
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【单选题】钢筋混凝土结构工程中，以下对工程用钢筋的叙述中，不正确的是（）
A.
选材：必须满足设计要求，并应有出厂合格证明书或试验报告
B.
如需要代换时，施工部门须立即作出决定
C.
加工：钢筋加工的形状、尺寸，必须满足设计要求；钢筋表面应沽净，无损伤、无油渍和漆污
D.
绑扎与安装：钢筋搭接或焊接的接头长度应满足施工规范的要求；受力钢筋接头位置应相互错开，而且。不宜位于构件的最大弯矩处
【单选题】Theodore Dreiser is old — he is very, very old. I do not know how many years he has lived, perhaps forty, perhaps fifty, but he is very old. Something gray and bleak and hurtful, that has been in the ...
A.
he folded and refolded the pocket-handkerchief
B.
he felt pity for the children there
C.
his tears ran down
D.
All of the above.
【单选题】— I don’t know whether he will come this morning. If he ____, I ____you — Thank you very much.
A.
comes; will tell
B.
comes; tell
C.
will come; will tell
D.
will come; tell
【简答题】比较下面两图的区别:图一是对 设置 。图二是对 设置 。
【单选题】---He is a very hard-working student. ---________. As far as I know, he often burns the midnight oil.
A.
You can say that again
B.
Absolutely not
C.
Heaven knows.
D.
No way
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