题目内容

When water freezes, it expands approximately ______ percent in volume.

A. seven
B. eight
C. nine
D. ten

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In an automobile engine,heat flows or transfers from the iron or aluminum cylinder to the cooling water,and from the coolant to the copper or aluminum ______ .

A. pump
B. radiator
C. piston
D. fan

In an automobile engine, heat flows or transfer from the iron or aluminum cylinder to the______, and from the coolant to the copper or aluminum radiator.

A. cylinder head
B. cooling water
C. oil
D. lubrication

The coolant gets hot______ it goes through the engine.

A. when
B. where
C. as
D. which

The ______of the lubricating system is to supply all moving parts inside the engine with lubricating oil.

A. funtion
B. gaol
C. purpose
D. objecive

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