A．stopping the main engine suddenly
B．changing the main engine running direction suddenly
C．the sailing from the shallow water area to the deep water area
D．the ship's trim too much
[单选题]Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.A . inside micrometerB . feeler gaugeC . adjustable trammelD . sighting device
[单选题]The projection on a shaft designed to change circular motion into up and down or back and fore motion is called （）.A . wheelB . crankshaftC . running gearD . cam
[单选题]The （） of the main shaft should be measured with a （）.A . clearance；calipersB . sinking；bridge gaugeC . diameter；bridge gaugeD . clearance；lead wire
[单选题]On opposite ends of a single shaft of a turboblower are a gas driven （）and a air compressor, which are sealed each other.A . charge air receiverB . scavenging air beltC . turbineD . air cooler
[单选题]Sealing in pump shaft is achieved by means of the ( ).A．gasketB．packingC．o-ring
[单选题]A wobbling tail shaft is an indication of（）.A . shallow waterB . an engine that is misfiringC . a tight tail shaft glandD . worn stern bearing or misalignment
[名词解释] 英译汉：main shaft
[单选题]When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?A．The propeller hub taper and shaft keyway should be inspected for cracks or corrosionB．The stern bearing alignment with the ster
[单选题]“Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaired, or at least patched up temporarily until the next stop” This sentence means that （）.A . Any leaks in piping, propeller shaft, machinery, tanks, will have to be repaire
[单选题]Where a propeller shaft passes through the hull，water is prevented from entering by means of a（）.A . stuffing boxB . propeller bossC . seacockD . stop-water