齿轮泵中齿轮在外形尺寸一定时,齿数越()模数及流量越大。A、多 B、少 C、不变 D 发布时间:2017-07-09 12:31 │ 来源:www.tikuol.com 题型:单项选择题 问题: 齿轮泵中齿轮在外形尺寸一定时,齿数越()模数及流量越大。A、多B、少C、不变D、大
题型:单项选择题 Not until yesterday ______ anything about the project that will be completed soon.A.did I learnB.have I learntC.I learntD.that I learnt 查看答案
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