EFI uses solenoid valves calledinjectors tometer fuel delivery.（）

What power source actuates a solenoid valve ________．

A.Air pressure

B.Hydraulic pressure

C.Electric current

D.Mechanical force

A.换向器

B.阴极射线管

C.涡轮

D.螺线管

A、真空电磁阀（VACUUM SOLENOID）

B、步进马达

C、放泄电磁阀（DUMP SOLENOID）

A.Solenoid

B.Relay

C.Clutch

D.Capacitor

A．CAPACITY HOLD SOLENOID OFF TIME

B．CAPACITY HOLD SOLENOID ON TIME

C．ANTICYCLE START TIME

D．START LAG COMPRESSOR TIMER

SV，采样值，英文全拼()。

A、Set value

B、Specific Volume

C、Sampled Value

D、solenoid valve

______ is not one of the winch controls．

A.a master controller or switchbox

B.a group of relays

C.contactors

D.a solenoid brake

A．CAPACITY HOLD SOLENOID OFF TIME

B．CAPACITY HOLD SOLENOID ON TIME

C．ANTICYCLE START TIME

D．START LAG COMPRESSOR TIMER

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

A、关闭大翼防冰电磁活门（WTAI SOLENOID VALVE）。

B、打开大翼防冰电磁活门（WTAI SOLENOID VALVE）。

C、关闭大翼防冰关断活门（WTAI SHUTOFF VALVE）。

D、打开大翼防冰关断活门（WTAI SHUTOFF VALVE）

A．LO RUN OIL PRESSURE

B．HI START FILTER DIFFERENTIAL PRESSURE

C．HI RUN FILTER DIFFERENTIAL PRESSURE

D．CAPACITY INC、REASE SOLENOID ON TIMER