Which of the following statements concerning the water tube and fire tube boilers is not true?()

A . natural circulation of the water in the water tube boiler is better than that in the fire tube boiler B . for the same output the water tube boiler will carry less mass of water compared with the fire tube boiler C . the water tube boiler will cost shorter time for steam raising D . the water tube boiler require lower skill in operating and maintaining

时间:2022-10-18 23:43:34 所属题库:船舶电气与船舶安全题库

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