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單項(xiàng)選擇題

Upon the completion of required tests, a （） should be placed on each extinguisher, showing the date and the person who completed the tests.

A.cap
B.disc
C.tag
D.cover

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單項(xiàng)選擇題

If you must enter a room or compartment to combat the fire, keep an escape path （）.

A.open
B.close
C.opens
D.closes

單項(xiàng)選擇題

According to the international regulations concerning the prevention of pollution of sea areas from ships, the disposal into the sea of all plastics is （）.

A.welcome
B.admitted in some special sea areas
C.prohibited
D.acceptable

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