球阀做为截断阀较普遍。 Ball valve as a cut-off valve is more common.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- 中国大学MOOC: 球阀做为截断阀较普遍。 Ball valve as a cut-off valve is more common.
- A common trouble with the fuel pump plunger or fuel valve spindle is （）.
- The word "valvulotome" means _______________. A: incision of a valve B: an opening of the valve C: an instrument for cutting a valve D: surgical repair of a valve
- The commonly used pressure control valve in hydraulic transmission system is ( ) A: directional valve B: relief valve C: hydraulic control check valve
- A throttle valve is a simple flow control valve, a throttle valve is virtually equal to( ).