The piston moves up and down, thus cau

1、If clearance between a piston and the

If clearance between a piston and the cylinder wall is excessive, piston slap will occurThe slap itself is caused by （）Aalternation of side ...

2、The cylinder and piston must be warmed

The cylinder and piston must be warmed up （） to a temperature of about 140 degF in standing by engine.ArepeatedlyBquicklyCgraduallyDimmediately

3、As the plunger moves up, the ports are

As the plunger moves up, the ports are closed and the fuel （） and delivered to the injector nozzle at very high pressure.Abeing compressedBto be pumped upCis pressurizedDare built u

4、The cap and new shell are tightened up

The cap and new shell are tightened up and then removed and the thickness of the wire measured by （）.Aa bridge gaugeBa micrometerCa thermometerDa indicator

5、Thus______________between England and

Thus______________between England and France which was to last for 100 years.Abroke out a warBdid a war break outCa war broke outDwas a war broken

6、设置主接口由Up转Down后延迟30秒切换到备份接口，主接口由Down转Up

设置主接口由Up转Down后延迟30秒切换到备份接口，主接口由Down转Up后60秒钟切换回主接口的配置为（）AA、backup 3060BB、backup delay3060CC、backup delay6030DD、backup delay enable-delay 30 disable-delay 60