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2019-01-04View Original

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bk03.jpg判断题规则: 1、两道题回答全错给予积极参与奖励 2 财富,回答一错一对给予奖励 4 财富,两道题回答全对给予奖励 6 财富 ;2、回答奖励每人限一次;3、每个回复限管理评分一次;4、回复后可见答案及答案解释;5、奖励在48小时内有效。 学*又拿奖,天天来逛逛 1、与梅花形弹性橡胶(爪形)联轴器相比,膜片联轴器的补偿能力更强,但是耐温能力差些( ) 2、离心泵之所以只能输送液体,而不能输送气体的原因是:液体的比重大,受到叶轮旋转的离心力较大,因而能够在入口持续造成足够的负压,使得入口管线中液体不断流入泵入口。( ) 答案:1、错误,2、正确

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