主页
学科
搜索
账户
常见问题
当前学科:注水泵工考试
题目:
单选
填料压得太紧会造成离心泵转子不动,排除方法正确的是()。
A . 应松开填料压盖
B . 应取出填料,再慢慢上紧压盖
C . 应松开填料压盖,再慢慢上紧
D . 应取出填料环,再慢慢上紧
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
项目成本估算有多种方法,但在项目工作的不同时期使用的方法也不尽相同,当项目定型后可以根据历史数据采用()进行估算
将电气设备的金属外壳或构架与大地连接,以保护人身的安全,这种接地称为()。
右前臂尺桡骨开放性骨折,清创复位,石膏外固定后36小时,患者高热,脉快,白细胞计数明显增高,伤口有大量恶臭渗出液,X线片显示皮下有气体,触诊有握雪感,应首先考虑()
正常生产过程中,影响异构化反应的因素是()。
Trying to Find a Partner One of the most striking findings of a recent poll in the UK is that of the people interviewed, one in two believes that it is becoming more difficult to meet someone to start a family with. Why are many finding it increasingly difficult to start and sustain intimate relationships? Does modern life really make it harder to fall in love? Or are we making it harder for ourselves? It is certainly the case today that contemporary couples benefit in different ways from relationships. Women no longer rely upon partners for economic security or status. A man doesn't expect his spouse to be in sole charge of running his household and raising his children. But perhaps the knowledge that we can live perfectly well without a partnership means that it takes much more to persuade people to abandon their independence. In theory, finding a partner should be much simpler these days. Only a few generations ago, your choice of soulmate (心上人) was constrained by geography, social convention and family tradition. Although it was never explicit, many marriages were essentially arranged. Now those barriers have been broken down. You can approach a builder or a brain surgeon in any bar in any city on any given evening. When the world is your oyster (牡蛎) ,you surely have a better chance of finding a pearl. But it seems that the old conventions have been replaced by an even tighter constraint: the tyranny of choice. The expectations of partners are inflated to an unmanageable degree: good looks, impressive salary, kind to grandmother, and right socks. There is no room for error in the first impression. We think that a relationship can be perfect. If it isn't, it is disposable. We work to protect ourselves against future heartache and don't put in the hard emotional labor needed to build a strong relationship. Of course, this is complicated by realities. The cost of housing and child-rearing creates pressure to have a stable income and career before a life partnership. What does the recent poll show?() Which of the following is NOT true about a contemporary married couple?() Which of the following was NOT a constraint on one's choice of soulmate in the old days?() Which of the following is NOT expected of a partner according to this passage?() The word "sustain"(paragraph 2) could be best replaced by().
几种常见金刚石钻头底唇面形状的特点是什么?
肌肉组织分为平滑肌、()和()3种。
旋转照射摆位要求中哪项不正确()
男,42岁,右颈前气管三角区可及多发肿大淋巴结,质硬,较固定,常见的病因()
三国时期,被称为“奸雄”的是魏国()。