The efficiency of coal－charging machine is very high ______ 1 500 tons of coal per hour.

相关问题

• 1、Charging is the filling of the engine cylinder with a supply or charge of fresh air _____
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• 2、Whats the main industry of Bedford？A．Coal.B．Iron and steel.C．Car.D．Education.
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• 3、Which of the following is NOT a reason for the low efficiency of the labor market at match
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• 4、The size of the discharge ring used for the efficient operation of a disk type purifier is..
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• 5、I was impressed _______ the efficiency of the work
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• 6、What is the recommended stock of coal？A．B．C．
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