The signal for fire alarm on a ship must be indicated（）.<br>A:at each alarm bell<br>B:at each alarm actuator<br>C:near all exits<br>D:on the station bill

The signal for fire alarm on a ship must be indicated（）.
A:at each alarm bell
B:at each alarm actuator
C:near all exits
D:on the station bill

出自：海船船员证

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