单选题
发布日期:2021-03-22
the piston cooling oil return pipes
the main and crankpin bearings
thrust and intermediate bearings
stern tube and thrust bearings
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为了克服心墙坝可能产生的拱效应和斜墙坝对变形敏感等问题,有时将心墙设在坝体中央向上游倾斜,成为斜心墙。
不同仓库在商品出库时的操作程序都是相同的。
楚辞的特征为书楚语、作楚声、()、名楚物。
农民利用宅基地建造的住房登记,应缴纳房屋登记费()元。
()是指在一定社会生活范围内,或在相当数量的人群之中,对某种事件、现象、行为等,正式传播或自发流行的情绪、态度和看法。
原子弹、氢弹、中子弹等统称为什么?
采用2S误差范围时,当测定次数在6此之内,不能提出任何可疑值。
管理科学基本原理之“老三论”:()、()、()。
可出现飞蚊症的有()
同样公称直径的容器法兰和管法兰可以互相代用。
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