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單項選擇題

When loading or discharging dry mud or cement，crew members should use goggles and（）.

A.facial respirator mask
B.ear plugs
C.rubberized boots
D.fireman's outfit

單項選擇題

When collecting condensation for drinking water，（）.

A.a sponge used to mop up and store condensation must be kept salt free
B.only condensation on the bottom of the canopy should be collected
C.it should be strained through a finely woven cloth
D.chlorine tablets should be used to make it drinkable

Which extinguishing agent will cool down a heated bulkhead in the least amount of time?（）

你可能感興趣的試題

When loading or discharging dry mud or cement，crew members should use goggles and（）.

When collecting condensation for drinking water，（）.

When loading or discharging dry mud or cement，crew members should use goggles and（）.

When collecting condensation for drinking water，（）.