题目
A.the oil separator
B.the fresh water generator
C.the compressor
D.fire pum
第1题
A.Gas produced by metal and coal.
B.Air kept hot by burning coal.
C.Hydrogen heated by a gas burner.
D.Natural gas carried in a metal container.
第2题
A.Gas produced by metal and coal.
B.Air kept hot by burning coal.
C.Hydrogen heated by a gas burner.
D.Natural gas carried in a metal container.
第3题
What enabled the earliest balloons to fly?
A.Gas produced by metal and coal.
B.Air kept hot by burning coal.
C.Hydrogen heated by a gas burner.
D.Natural gas carried in a metal container.
第4题
The fresh air intake of the inert gas system ______,
A.Prevents the flue gas from falling below 3% content of oxygen
B.Allows the inert gas piping to be used for gas freeing the tanks
C.Opens when there is excessive vacuum on the deck water seal
D.Enables outside air to mix with and cool hot flue gasses
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