The officer in charge of the engineering watch shall ensure that all machinery involved with the maneuvering of the ship can immediately be placed in the __ of operation when notified that the ship is
锅炉停用时间超过一个月,应该()。Overheating of the hydraulic fluid in an electro-hydraulic anchor windlass can result from a/an( ).活塞的裂纹可采用_______检查He often teaches ________ to speak English
