When start a screw pump, the by pass valve should be （）.

A、closed

B、opened fully

C、cracked open

D、partly open

Most conducting materials such as copper, aluminum, iron, nickel, and tungsten （）.

A、increase in resistance with increased temperature

B、increase in resistance with decreased temperature

C、decrease in resistance with increased temperature

D、increase in conductance with increased temperature

Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect （）

A、increase blow-by in all cylinders

B、incomplete combustion in all cylinder

C、overloading in all cylinders

D、insufficient fuel delivery to all cylinders

Any carbon built up on surfaces must be washed away by （） additives and held in suspension by a （） additive.

A、dispersant；detergent

B、detergent；dispersant

C、dispersant；dispersant

D、detergent；detergent

Which of the routine maintenance procedures listed is required for starting air receivers?（）

A、over-speeding

B、overload

C、low exhaust temperature

D、high crankcase pressure

Moisture in a D-Cmotor would cause （）.

A、short circuit

B、speed up

C、slow down

D、hunting

什么是即期年金

在工程的实施状况报告中应包括()，预测未来风险报告。

A.各种市场行情B.风险状况报告C.各投资者企业状况报告D.天气预测警报

I feel like______to the owner of the house to complain.
A.
writing
B.
to write
C.
write
D.
having written

侧貌直面型对应的磨牙咬合关系是（）A、错牙合B、近中牙合C、远中牙合D、生理牙合E、异常牙合

你通过了戒毒警察考试，马上要走上工作岗位。但是家人认为戒毒警察岗位很危险，担心你的安全，不支持你的工作。你会如何劝说他们?请现场模拟。