In the priming experiment, both prime and target are stimuli.

Which of the following is NOT mentioned as a requirement？

A．Good appearance

B．Previous experience

C．A master's degree

D．Good speaking and writing skills

A simple pumping system consists of a suction branch, a pump and _____.

A.a priming device

B.a discharge branch

C.a filter

D.a suction valve

A、Selective breeding

B、Vaccination

C、Antibiotics

D、Immune priming

A centrifugal bilge pump requires priming _____.

A.primarily to lubricate the shaft seals

B.due to the inability of this type of pump to lift water to cover the suction (eye) of the impeller

C.to initially unload the pump by having its head pressure equal to discharge pressure

D.in order to overcome the potential energy of water in the discharge line

A.启动(Priming)

B.AP加入请求

C.3层LWAPP发现消息的子网广播

D.OATAP

A．was pouring money down the drain

B．lowered human dignity

C．avoided direct charity

D．provided business with initial impetus which would make it self sufficient

Priming of the tides occurs ______.

A.at times of new and full Moon

B.when the Earth, Moon, and Sun are lying approximately on the same line

C.when the Moon is between first quarter and full and between third quarter and new

D.when the Moon is between new and first quarter and between full and third quarter

The carburetor is placed on the engine to ______.

A.distribute the gasoline

B.mix the fuel and air

C.properly lubricate the engine

D.assist in priming the cylinders