附加导线锚段长度不宜大于()m。 A.1400 B.1600 C.1800 D.20

题型:单项选择题

问题:

附加导线锚段长度不宜大于()m。

A.1400

B.1600

C.1800

D.2000

考点:接触网工接触网工综合练习接触网工综合练习题库
题型:单项选择题

网络管理系统有_______种实现方式。

A.2

B.3

C.4

D.5

题型:单项选择题
在某交流电路中,有一正在工作的变压器,原、副线圈的匝数分别为n1=600匝、n2=120匝,电源的电压为U=311sin100πtV,原线圈中串联一个0.2A的保险丝,为保证保险丝不被烧毁,则(  )

A.负载功率不能超过44W

B.负线圈电流的最大值不能超过1A

C.负线圈电流的有效值不能超过1A

D.负线圈电流的有效值不能超过0.2A

题型:单项选择题

绝大多数试验都是短期荷载试验,这种试验与结构实际工作状况完全相同。

题型:单项选择题

“I never expected that I would be so busy. Why can’t there be 25 hours in a day?” complained Liu Ran in Hong Kong as mid-term exams were going on.

The 18-year-old was Shandong Province’s top scorer in this year’s college entrance examination. After graduating from Tai’an No.1 High School, she chose the Chinese University of Hong Kong(香港中文大学) , although both Peking University and  Tsinghua University promised her a place.

“I want to experience a more international school and social life in Hong Kong. I’m majoring in journalism, so Hong Kong will surely help widen my horizons,” Liu said.

It is two months since Liu first set foot on Hong Kong. She missed home a lot at the beginning, because of the food and language problems.

“The canteen offers mostly Western or Guangdong food, but it’s convenient to cook for ourselves in our dorm if we like. People speak Cantonese and almost all classes are in English,” Liu explained.

Her English and Cantonese are now both improving, but she still needs more time to adapt to the new environment.

“I’m happy that I made the right decision to study here. With a mix of the Eastern and Western cultures, there is so much to discover and learn,” she said.

Liu has 18 credit hours(学分) of classes every week and 23 non-credit hours every other week. She has signed up for four associations including the Chinese Language Debating Team and the drama club. Essays, book reports and presentations also take plenty of time to prepare. And , of course, there are various parties to attend.

“I wasn’t a party animal before, but that may be interesting part of college. I sense myself changing,” Liu said.

小题1:Liu Ran chose the Chinese University of Hong Kong, because___________.

A.she couldn’t be admitted to Peking University

B.Hong Kong is a good place

C.she wants to be far from her homeland

D.the Chinese University of Hong Kong can widen her horizons小题2: According to the last paragraph, we can infer______________________________.

A.now Liu Ran is an animal

B.Liu Ran hates the busy life in the Chinese University of Hong Kong

C.Liu Ran likes the food there

D.the busy and full life makes Liu Ran feel good小题3:Liu Ran had to overcome the difficulties in many aspects EXCEPT_______________.

A.food

B.language

C.missing home

D.no friends

题型:单项选择题

行动管理的步骤包括()。

A.设定目标

B.制定措施

C.公开计划

D.调整心态和公开行动

更多题库