单项选择题

In the electronic governor actuator, the oil pressure is provided by a （）pump driven by a shaft connected to the engine camshaft。

A.servomotore
B.hydraulicmotor
C.gear
D.volute

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单项选择题
（）used to ensure that ships don’t discharge oil when pumping out oily water from any oil contaminated space。

A.Boiler
B.Incinerator
C.Oily water separator
D.Sewage treatment unit
单项选择题
I’m going to Xi ’an next wek .Have you anything （）to your parents？

A.to take
B.to be taken
C.to be bought to
D.to buy
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