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

單項(xiàng)選擇題

In order to reduce the accumulation of static electricity while loading petroleum products，you should（）.

A.start to load at maximum pressure
B.start to load slowly
C.increase the air flow into the tank
D.use the overall method of loading only

你可能感興趣的試題

單項(xiàng)選擇題

If you are bunkering and you close off one tank in the line of tanks being filled，the rate of flow to other open tanks on the same line will（）.

A.increase
B.decrease
C.stop
D.remain constant

單項(xiàng)選擇題

How must each storage tank for helicopter fuel on a ship be marked?（）

A.DANGER - KEEP AWAY
B.DANGER - EXPLOSIVE VAPORS
C.DANGER - NO SMOKING
D.DANGER - FLAMMABLE LIQUID

<ins id="uzzdr"></ins>