單項選擇題

The usual method of effectively applying foam on a fire is by （）.

A.spraying directly on the base of the fire
B.flowing the foam down a vertical surface
C.sweeping the fire before you with the foam
D.spraying directly on the surface of the fire

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單項選擇題

During the inspection, the starting air valves should be closed （）the engine from turning.

A.to increase
B.to speed up
C.to prevent
D.to reduce

單項選擇題

The viscosity regulator controls the fuel oil temperature （）provide oil at the correct viscosity for combustion.

A.in order that
B.because of
C.in order to
D.owing to

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The usual method of effectively applying foam on a fire is by （）.

你可能感興趣的試題

During the inspection, the starting air valves should be closed （）the engine from turning.

The viscosity regulator controls the fuel oil temperature （）provide oil at the correct viscosity for combustion.

99色精品-9色在线-99色在线-99色视频国产欧美日产一区二区三区_亚洲精品亚洲人成在线观看_四虎在线精品永久观看_免费一级a一片久久精