单项选择题
In case of your steering gear failed，（）should be exhibited in shapes or lights.
A.not under command B.restricted in her ability to manoeuvre C.restrained by her draught D.underway
单项选择题 If your radiotelephone fails while underway，（）.
单项选择题 If you are on the beach and are signaling to a small boat in distress that your present location is dangerous and they should land to the left，you would（）.
单项选择题 If more than one raft is manned after the vessel has sunk，you should（）.
