In the IMO SMCP the situations（）phrases using the work

单项选择题

In the IMO SMCP the situations（）phrases using the work “can” appear it clear whether a possibility is referred to.

A.where
B.when
C.after
D.unless

相关考题

单项选择题（）it is advisable to remain on a VHF channel 8, say: “stand by on VHF channel 8”.

单项选择题（）we stand away from the church bell, it takes time for the sound waves to each us.

单项选择题 Before（）,a station shall take precautions to ensure that its emission will not interfere with transmission already in progress.

GMDSS