158. --- Sorry, I don’t know how to work

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问题选择题

158. --- Sorry, I don’t know how to work out this maths problem.

--- Use your _____, and then you will find a way.

A．mind

B．heart

C．brain

D．Head

答案

单项选择题

Which action should you take after sending a false distress alert on VHF?（）

A.Send a DSC cancellation message on Ch-70

B.Make a voice announcement to cancel the alert on Ch-16

C.Make a voice announcement to cancel the alert on Ch-13

D.Make a voice announcement to cancel the alert on Ch-22A

单项选择题

放大器的电压放大倍数为（）。

A.-6.8

B.-10

C.-75

D.-113