单项选择题
A.They would like to call out all hands out for it
B.They would rather handle themselves, then call out all hands
C.They prefer to put it out by themselves
D.They think it is difficulty to call out all hands for a minor fire
单项选择题 （）is any cargoes that are transported in a loose form without any packaging in large quantities.
单项选择题 （）should ensure that adequate measures are taken to prevent alcohol and drugs from impairing the ability of watchkeeping personnel.
单项选择题 You are about to cross a narrow channel when you see an approaching vessel that can only be navigated safely within the channel.You should（）.