The mode of control employed by an alarm circuit is a
A. two position control
B. single speed floating control
C. proportional speed floating control
D. reset control
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当价格水平上升，实际利率________，同时实际GDP的需求量________。
A. 上升；增加
B. 上升；减少
C. 下降；增加
D. 下降；减少
E. 不变；不变
describe the procedure to start an emergency generator ？
The follow-up gear on an electro-hydraulic steering gear
A. relieves excessive fluid pressure
B. takes the pump off stroke when the desired rudder angle is attained
C. allows for rudder movement faster than the movement of the ship&39;s
D. returns the rudder to amidships when the wheel is release
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