单项选择题
Puncture leaks in the lower tubes or bottom of an inflatable liferaft should FIRST be stopped by using（）.
A.sealing clamps B.repair tape C.a tube patch D.sail twine and vulcanizing kit
单项选择题 Point out which one of the following items is not in the charge of Chief Officer in repairing operation（）.
单项选择题 Please have the damage to the gangway（）.
单项选择题 Please have the damage on gangway（）as soon as possible for account of the Stevedore Company.
