gas cylinder ______
举一反三
- In addition to lubricating， cylinder oil assists in forming a gas seal and contains （） which clean the cylinder liner. A: additives B: water C: grease D: acid solutio
- The most appropriate description about the role of the cap for high-pressure gas cylinders is ( ).(2 points) A: to protect the valve from being damaged, prevent dust, grease, and other debris into the cylinder valve B: to label gas names and properties C: for beauty D: for proper labeling of cylinder manufacturing standards
- A<br/>gas enclosed in a cylinder by means of a piston that can move without<br/>friction is warmed, and 1000 J of heat enters the gas. Assuming that<br/>the volume of the gas is constant, the change in the internal energy<br/>of the gas is [] A: 0 B: 1000<br/>J C: -1000<br/>J D: None<br/>of the above
- The gas loads on the engine structure are constrained by means of hydraulically preloaded （） which connect the bed plate， frame sections and cylinder jackets into a single unit. A: connecting rods B: main bearing C: column D: tie rod
- The gas loads on the engine structure are constrained by means of hydraulically preloaded （） which connect the bed plate, frame sections and cylinder jackets into a single unit. A: Aconnecting rods B: Bmain bearing C: Ccolumn D: Dtie rods