On opposite ends of a single shaft of a turboblower are a gas driven （）and a air compressor, which are sealed each other.

[名词解释] 反接 opposite arrival

[名词解释] 反发 opposite departure

[单选题]In the navigation,_______cause the shafting over load most easilyA．stopping the main engine suddenlyB．changing the main engine running direction suddenlyC．the sailing from the shallow water area to the deep water areaD．the ship's trim too much

[单选题]B．y the time the course ends_________, a lot about the culture of this country.A． we'll learnB． we are learningC． we have learntD． we'll have learnt

[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]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