Before entering or leaving a harbour, the ship should be given a ()(彻底) cleaning.
A、throw
B、through
C、thorough
D、though
A、throw
B、through
C、thorough
D、though
A、either trimmed by the head or the stern B、on an even keel C、trimmed down by the head D、trimmed down by the stern
A、signaling that all personnel are clear before lifting or lowering material B、Examining material for sharp edges or protruding points before handling C、Closing, tagging, or securing valves that permit entrance of steam, water, or air into a fitting or other equipment D、Throwing materials from high places to the deck
A、before you enter the water B、after you enter the water C、after one hour in the water D、after you notice that your suit is losing buoyancy