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【单选题】
通过人体的电流越大危险性越大，根据人体状态，可将通过的电流分为三个逐级提升的级别:A.
感知电流一摆脱电流-室颤电流
B.
摆脱电流- -感知电流一室颤电流
C.
室颤电流-摆脱电流-感知电流
D.
感知电流一室颤电流一摆脱电流
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【简答题】曲线命令较之色阶命令的优点是什么?
【单选题】When reservoir pressure is reduced below ( ) pressure, gas evolves in the reservoir, leaving less gas dissolved in the liquid.
A.
Sublimation point
B.
boiling-point
C.
freezing-point
D.
bubble-point
【判断题】Solar power has a low energy density, so requires large collecting devices. The potential energy of rainis naturally concentrated and held in mountain lakes; we concentrate this energy artificially wh...
A.
正确
B.
错误
【判断题】The total pressure drop at any point in a reservoir is the sum of the pressure drops at that point caused by flow in each well in the reservoir.
A.
正确
B.
错误
【单选题】The children ______ many times not to swim in the reservoir.
A.
were being told
B.
have been told
C.
had being told
D.
told
【单选题】以下是ASCII消息使用二进制表示,请查看以上ASCII码表,还原出消息的内容。01001000 01100101 01101100 01101100 01101111
A.
fault
B.
right
C.
hello
D.
mouse
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