（） are commonly used in mechanical-hydraulic governor（调速器） to sense engine speeds.
举一反三
- The hydraulic （） is used to control engine speed. A: motor B: pump C: governor D: capsta
- _____<br/>the engines, the diesel engine is _____ used engine on board. A: Between / more commonly B: Among / the most commonly C: Between / not more commonly D: Among / not the most commonly
- A large change in ambient temperature， or using an oil of a viscosity different from the one recommended by the manufacturer in a mechanical hydraulic governor， will result in the need to adjust the （）.
- 词汇与结构 The engine driven pumps are used in main hydraulic ________ systems.
- The commonly used pressure control valve in hydraulic transmission system is ( ) A: directional valve B: relief valve C: hydraulic control check valve