电动机是使用最普遍的电气设备之一，一般在70%-95%（）下运行时效率最高，功率因数

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空。

Since the one-baby policy __小题1:____(carry) out in China, Chinese families have been shrinking from one with over 10 members to the other with only three including parents and baaby. Things are usually out of our expectation. Apart from the benefits ___小题2:____ have been mentioned enough, small families are now beginning to have ___小题3:___own problems. Because parents are having fewer children, they increasingly feel the need ___小题4:____(control) the lives of those children. As a result, many children are becoming less ___小题5:____(depend), determined and ambitious than in the past.

Parents today discourage their children from doing housework, extracurricular activities and socializing ___小题6:___ they fear it will interrupt their education. For example, when I was younger I wanted to learn the guitar ___小题7:___ my parents wouldn’t allow me because they believed it would distract me from my studies. They are happy as long as I perform ___小题8:___(wonder) in my exams but don’t seem concerned about how I develop ___小题9:___ a person.

To some extent, I understand parents’ concerns, but I think they should love their children for __小题10:__ they are, not what they want them to be. We deserve the chance to chase our own dreams and learn on our own. Even if we fail, we can learn from those failures.

毕业5年内的高校毕业生创办的实体，新增吸纳（）劳动者就业（须签订1年以上劳动合同，并为其按规定缴纳社会保险费）的，可向创业项目所在地公共就业服务管理机构申请一次性创业吸纳就业奖励。

A.1名

B.2名以上

C.3名以上

D.5名以上

某施工单位承包某工程项目，甲乙双方签订的关于工程价款的合同内容有：
(1)建筑安装工程造价660万元，建筑材料及设备费占施工产值的比重为60%。
(2)工程预付款为建筑安装工程造价的20%。工程实施后，工程预付款从未施工工程尚需的主要材料及构件的价值相当于工程预付款数额时起扣，从每次结算工程价款中按材料和设备占施工产值的比重扣抵工程预付款，竣工前全部扣清。
(3)工程进度款逐月计算。
(4)工程保修金为建筑安装工程造价的3%，竣工结算月一次扣留。
(5)材料和设备价差调整按规定进行(按有关规定上半年材料和设备价差上调10%，在6月份一次调增)。
工程各月实际完成产值见下表。

工程价款结算的方式有哪几种

壳管式热交换器的盖板中设一隔板，用以提高流体的（）。

A.速度

B.压力

C.换热面积

D.热阻

步进电动机驱动电路一般由（）等组成。

A、脉冲发生控制单元

B、脉冲移相单元

C、功率驱动单元

D、保护单元

E、触发单元