单项选择题
A.be treated according to the C-Es command exactly B.be treated according to MARPOL C.accumulate in bilges or on tank tops in accordance with MARPOL D.discharge to sea at the specified areas
All items such as steam pipes, exhaust pipes and fittin...
单项选择题All items such as steam pipes, exhaust pipes and fittings which, because of their location and operating temperature, present a hazard should be adequately lagged.That means the items should（）
A.not be put into operation too early B.be pay adequate attention to C.be used only when necessary D.be coated with certain material
In machinery space, the valves, pipes should be（）A.arra...
单项选择题In machinery space, the valves, pipes should be（）
A.arranged as close to each other as possible to save space B.arranged far away from each other for convenient operation C.be fixed or clamped to avoid vibration D.kept easy removable as to convenient repairing work
The guard, fencing or shielding for moving parts or mac...
单项选择题The guard, fencing or shielding for moving parts or machinery can be removed for repair only when the machinery it belongs to（）
A.stays at rest B.is working stably C.is worn out D.is in good operation
