正确答案: C
BDC
题目:For a diesel engine, when the piston is at the (), the clearance volume is the largest.
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学习资料的答案和解析:
[单选题]由于船舶的特殊性,使动力装置的可靠性更为重要和复杂。它与下列因素有关()。Ⅰ.各组成设备的可靠性;Ⅱ.各组成设备的维修性;Ⅲ.管理人员的因素
Ⅰ+Ⅱ+Ⅲ
[单选题]柱塞套筒进行滑动试验时,一般将柱塞抽出1/3左右后观察其()的情况。
下滑速度
[单选题]在高增压柴油机上,排气阀阀盘的温度可达()℃。
A.650~800
[单选题]由于铁梨木需进口,价格较高,故采用()作为铁梨木的代用材料。
桦木层压胶木
[单选题]Oil is supplied to the cylinder wall and () by means of mechanical lubricators.
the piston rings
[单选题]To prevent the build up of high stresses engine must not be run continuously ().
at critical speed
[单选题]A diesel engine cooling water system with a pH factor of 30 indicates a condition of ().
excessive acidity
[单选题]On a twin-screw,twin-rudder vessel,the most effective way to turn in your own water,with no way on,is to put().
one engine ahead and one engine astern,with full rudder