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【多选题】
如图所示是某位同学在完成MOSFET共源放大电路所测得的波形。假设他使用CH1测量电路输入信号，使用CH2测量电路输出信号。【图片】A.
放大电路在此频率处的电压增益模值约为22.8
B.
当前信号频率小于100Hz
C.
输出信号虽然有一定失真，但在许可范围之内。
D.
示波器设置合理，触发模式及相关设置参数选择恰当。
E.
输出信号与输入信号的相位差为180度。
F.
输出信号无失真
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【单选题】SOLAS regulations require that the inert gas system shall be capable of delivering inert gas with an oxygen content of not more than what percentage?
A.
5%
B.
8%
C.
6%
D.
3%
【单选题】The deck water seal of the inert gas system ______．
A.
Cools the inert gas and prevents soot from entering the cargo tanks
B.
Acts as an emergency shutdown when inlet pressures exceed the safe working pressure
C.
Prevents the backflow of hydrocarbon gasses into nonhazardous areas
D.
Relieves sudden large overpressures in the system
【单选题】What is NOT a function of the scrubber of an inert gas system ________．
A.
Cool the inert gas
B.
Remove particulate matter like soot
C.
Maintain pressure in the tanks
D.
Remove chemical impurities
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