low flow sensor位于（）A、主电子设备舱B、驾驶舱C、前电子设备舱D、空调舱

A.salinity is abnormally

B.high steam demand is too

C.feed-water flow is low

D.water level is abnormally low

If both the ‘high level’and ‘low level’ alarms come on for the same address of a centralized（集中的） control console, the most likely problem is a/an ______.

A.sensor failure

B.failed alarm

C.low level

D.extremely high level

What keeps Grimsvotn still?

A. The slow flow of water

B. The low water temperature

C. The thick glacier

D. The water pressure

In the southern hemisphere the wind flow associated with a low pressure system will have which of the following characteristic？________.

A.the wind velocity is least near the center of the system

B.th e direction of the flow is counterclockwise

C.both A and B

D.neither A nor B

A high rate of separation between oil and water is favored by ______.

A.large size of oil globule(小球)

B.low temperature

C.high viscosity

D.high flow rate

A low pressure annular preventer which is used to direct flow of kick fluids away from the rig floor is called a ______.

A.dump valve

B.deflector

C.separator

D.diverter

A sensor network is （ ） of a large number of sensor nodes that are densely deployed （ ） inside the phenomenon or very close to it.

A．part B．consist C．consisted D．composed A．either B．from C．at D．of