海船船员考试
单选题Most solenoid valves are actuated by （）.A a springB an electromagnetC the force of gravityD refrigerant pressure
题目
a spring
an electromagnet
the force of gravity
refrigerant pressure
参考答案和解析
相似问题和答案
第1题：
Valves on steam-smothering lines to cargo tanks shall be set with ______．
A.The master control valve shut and valves to individual cargo tanks shut
B.The master control valve open and valves to individual cargo tanks shut
C.The master control valve shut and valves to individual cargo tanks open
D.All valves open
第2题：
丙烷机控制时间限设定值菜单（）功能是不允许加/减载电磁阀得电加载的时间长度。
- A、CAPACITY INCREASE SOLENOID OFF TIMER
- B、CAPACITY DECREASE SOLENOID ON TIMER
- C、CAPACITY DECREASE SOLENOID OFF TIMER
- D、SLIDE VALVE RETURN AT SHUTDOWN TIMER
正确答案:A
第3题：
The refrigeration system low pressure cutout switch is actuated by______.
A.an electric system manager
B.a sensing bulb at the tail coil of the evaporator
C.pressure changes in the suction line
D.failure of the king solenoid valve
第4题：
飞机在地面，外流活门的工作是由其内部的哪个部件控制的？
- A、真空电磁阀（VACUUM SOLENOID）
- B、步进马达
- C、放泄电磁阀（DUMP SOLENOID）
正确答案:A
第5题：
No4 solenoid Valve的中文意思是（）。
正确答案:4号电磁阀
第6题：
Solenoid Valve是电磁阀的英文名称.
正确答案:正确
第7题：
丙烷机控制时间限设定值菜单（）功能是在自动加/减载模式下，如果需要降低丙烷机的负载，加/减载电磁阀将会在定时器的时间长度内对丙烷机进行减载。
- A、CAPACITY INCREASE SOLENOID OFF TIMER
- B、CAPACITY DECREASE SOLENOID ON TIMER
- C、CAPACITY DECREASE SOLENOID OFF TIMER
- D、SLIDE VALVE RETURN AT SHUTDOWN TIMER
正确答案:B
第8题：
4 sanitary storm valves to be dismantled，cleaned，grounded and coated with anti-corrosive paint，then refitted in order．This sentence is most possibly found in ________．
A.Chief Mate's remark on stowage plan
B.Store list made by Chief Engineer
C.Collision Report made by Master
D.Repair List
第9题：
（EMB145）为什么在飞行中，油门杆不能设置reverse（反推）位（）
- A、因为idle lock solenoid（慢车锁电磁活门）是通电衔接的
- B、因为idle lock solenoid（慢车锁电磁活门）是断电的
- C、只有一个油门杆idle lock solenoid（慢车锁电磁活门）锁定
正确答案:B
第10题：
an electric system manager
a sensing bulb at the tail coil of the evaporator
pressure changes in the suction line
failure of the king solenoid valve