An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with________.A.graphite packingB.sealing compoundC.lubricating oilD.gaskets
An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with________.
A.graphite packing
B.sealing compound
C.lubricating oil
D.gaskets
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Thecontrolspindleoperatestheslipperringoroofthevariabledeliverypump,whichcontrolsthesuctionanddischargeoftheoil() A、servo-motolB、swashplateC、plungerD、cylinder
请定义一个Cylinder类，具体要求为：（1）每个Cylinder类对象可以存储一个圆柱体（包括半径和高）；（2）具有用于初始化半径和高的构造方法；（3）具有计算圆柱体体积的方法GetVolume。
类、对象的定义及类的成员函数、构造函数建立问题 建立类cylinder，cylinder的构造函数被传递了两个double值，分别表示圆柱体的半径和高度。用类cylinder计算圆柱体的体积，并存储在一个double变量中。在类cylinder中包含一个成员函数vol，用来显示每个cylinder对象的体积。