单项选择题
A.claim to B.claiming to C.claim for D.claiming for
（）, the metal expands.A.HeatsB.HeatingC.To heatD.Heated
单项选择题（）, the metal expands.
A.Heats B.Heating C.To heat D.Heated
Tell your men （）the rules and procedures of working whe...
单项选择题Tell your men （）the rules and procedures of working when dismantling the equipment.
A.not to go against B.don’t go against C.not go to against D.to not go against
（） in the engine room, the motormen could hardly talk e...
单项选择题（） in the engine room, the motormen could hardly talk each other.
A.To work B.Working C.Having worked D.worked
