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【简答题】
挡土墙墙后土体处于朗肯主动土压力状态时，土体剪切破坏面与竖直面的夹角为（）；当墙后土体处于朗肯被动土压力状态时，土体剪切破坏面与水平面的夹角为（）。
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【简答题】The output of our factory is now twice ________ it was three years ago. A) what B) that C) as D) which
【单选题】what will happen to the cardiac output if the afterload of heart (BP) is increased?
A.
The cardiac output will increase
B.
The cardiac output will decrease
C.
The cardiac output will not decrease until the mean arterial pressure rises above about 160 mmHg.
D.
The cardiac output will never decrease
【单选题】What is the indication of an open in the output of a driving gate?
A.
Only the output of the defective gate is affected.
B.
The affected node will be stuck in the HIGH state.
C.
The affected node will be stuck in the LOW state.
D.
There is a signal loss to all load gates.
【简答题】What the output？（）
【简答题】What is the output？
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