对于形状()的静止配合件拆卸可用拉拔法。 A.复杂 C.不规则 B.规则 D.简单

题型:单项选择题

问题:

对于形状()的静止配合件拆卸可用拉拔法。

A.复杂

C.不规则

B.规则

D.简单

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题型:单项选择题

让·多米尼克·博比1995年患了中风,全身上下只有眼皮能动弹。面对病魔,他并不悲观失望,决定把自己的经历和感受写出来。秘书把法语字母按照使用频率多少排出次序,将它们编成一个有利于他写作的字母表,然后按顺序一个一个地念字母。他听到需要的字母时,就眨一下眼皮;如果不要,就眨两下眼皮……一经过较长时间的艰苦努力,他终于写成了《潜水衣和蝴蝶》一书。此书的主题是:生活中的不幸,就像潜水衣的硬壳一样,使他几乎喘不过气来,但他并没有放弃理想,他的心就像一只轻盈的蝴蝶一样自由地飞翔。

让·多米尼克·博比是具有自强精神的人吗?试从材料中举例证明。

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题型:单项选择题

()

A.

B.

C.

D.

题型:单项选择题

质量为60kg的人,爬上高出地面20m的平台,他克服重力做功____J,他的重力势能增加______J.

题型:单项选择题

风湿性心脏瓣膜病二尖瓣狭窄不可能有下列哪项心电图改变()

A.左房增大,P波增宽超过0.11s,有切迹

B.心房颤动

C.右室肥厚的心电图图形

D.左室肥厚的心电图图形

E.右束支传导阻滞

题型:单项选择题

Division manager: I want to replace the Microton computers in my division with Vitech computers.
General manager: Why
Division manager: It costs 28 percent less to train new staff on the Vitech.
General manager: But that is not a good enough reason. We can simply hire only people who already know how to use the Microton computer.
Which of the following, if true, most seriously undermines the general manager’s objection to the replacement of Microton computers with Vitechs

A.Currently all employees in the company are required to attend workshops on how to use Microton computers in new applications.

B.Once employees learn how to use a computer, they tend to change employers more readily than before.

C.Experienced users of Microton computers command much higher salaries than do prospective employees who have no experience in the use of computers.

D.The average productivity of employees in the general manager’s company is below the average productivity of the employees of its competitors.

E.(E) The high costs of replacement parts make Vitech computers more expensive to maintain than Microton computers.

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