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【单选题】
燃油箱通气的目的和作用A.
平衡油箱内外压力
B.
避免压差造成油箱结构损坏
C.
确保供油泵的吸油能力
D.
其它选项均为正确
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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？（）
【单选题】what will happen to the cardiac output if the afterload of heart (BP) is increased?
A.
The cardiac output will not decrease until the mean arterial pressure rises above about 160 mmHg.
B.
The cardiac output will increase
C.
The cardiac output will decrease
D.
The cardiac output will never decrease
【简答题】What is the output？
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