單項(xiàng)選擇題

How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）

A.De-energizes the "charged mist" effect
B.Maintains a positive pressure on the vent header to cool the flammable vapors
C.Inert gas filters out the flammable vapors from the cargo tank spaces
D.Inert gas dilutes the flammable vapor and air concentrations to keep them below the lower explosive limit

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單項(xiàng)選擇題

How about deducting 10 bundles，（）is to say 50 bundles partly rusty?

A.it
B.this
C.that
D.which

單項(xiàng)選擇題

Fearing damage from either or both of the above incidents，the Master now（）me this note of protest，reserving to himself the right to extend same at time and place convenient．

A.enters
B.enters into
C.enters with
D.enters to

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How does an inert gas system on a tanker function to prevent explosions in cargo tanks? （）

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How about deducting 10 bundles，（）is to say 50 bundles partly rusty?

Fearing damage from either or both of the above incidents，the Master now（）me this note of protest，reserving to himself the right to extend same at time and place convenient．

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How about deducting 10 bundles，（）is to say 50 bundles partly rusty?

Fearing damage from either or both of the above incidents，the Master now（）me this note of protest，reserving to himself the right to extend same at time and place convenient．