点状腐蚀并渗透至金属,这种作用称作:()A、局部腐蚀 B、阴极渗透 C、漆下腐蚀 D

题型:单项选择题

问题:

点状腐蚀并渗透至金属,这种作用称作:()

A、局部腐蚀

B、阴极渗透

C、漆下腐蚀

D、点蚀

考点:涂装工考试涂装工考试题库
题型:单项选择题

陈鹤琴提出的“活教育”目的是( )。

A.谋个性之发展

B.学会生活

C.抗日救国

D.做人,做中国人,做现代中国人

题型:单项选择题

阅读理解。

     I've always known my kids use digital communications gear (装置) a lot. But my cellphone

bill last month really grabbed my attention. My son had come up to nearly 2,000 incoming text

messages, and had sent nearly as many. Of course, he was out of school for the summer and

communicating more with friends from a distance. Nevertheless, he found time to hold down a

summer job and complete a college course in between all that typing with his thumb.

     I was even more surprised to learn that my son is normal. Teenagers with cellphones each

send and receive 2,272 text messages a month on average, Nielsen Mobile says.

     Some experts regret that all that keyboard jabber is making our kids stupid, unable to read

nonverbal cues such as facial expressions, gestures, posture and other silent signals of mood

and attitude. Unlike phones, text messaging doesn't even allow transmission of tone of voice or

pauses, says Mark Bauerlein  author of a book called The Dumbest Generation: How the Digital

Age Stupefies Young Americans and Jeopardizes (危害) Our Future.

     Beyond that, though, I'm not sure I see as much harm as critics of this trend. I've posted before

on how I initially tried to control my kids' texting. But over time, I have seen my son suffer no

apparent ill effects, and he gains a big benefit, of easy, continuing contact with others.

     I don't think texting make kids stupid. It may make them annoying, when they try to text and

talk to you at the same time. And it may make them distracted, when buzzing text messages

interrupt efforts to noodle out a math problem or finish reading for school.

     But I don't see texting harming teens' ability to communicate. My son is as accustomed to

nonverbal cues as any older members of our family. I have found him more engaged and easier

to communicate with from a great distance, because he is constantly available via text message

and responds with faithfulness and speed.

1. What does the underlined word "distracted" in the fifth paragraph mean?

A. Confused.                          

B. Absentminded.

C. Comfortable.                        

D. Badtempered.

2. What would be the best title for this passage?

A. For Teens, Texting Instead of Talking              

B. For Parents, Caring Much for Their Kids

C. Advantages and Disadvantages of Texting            

D. The Effect of Communication

3. What is Mark Bauerlein's attitude towards texting?

A. It is so convenient for teens to communicate with others.

B. It is likely to cause trouble in understanding each other.

C. It is convenient for teens to text and call at the same time.

D. It will cause damage to the development of intelligence.

4. The author's attitude towards texting is ________.

A. suspicious                  

B. opposed

C. supportive                  

D. doubtful

5. According to the passage, which of the following statements is NOT true?

A. It is normal for a teen to send or receive 60 text messages a day.

B. Texting is a very popular way of communication among teens.

C. Parents don't mind teens' texting and talking at the same time.

D. The writer limited his son to sending or receiving text messages at first.

题型:单项选择题

根据《民用航空空中交通管理运行单位安全管理规则》,()的安全管理部门或安全管理人员负责单位的安全管理体系的组织与实施工作。

A.中国民用航空局

B.民航地区管理局

C.当地政府

D.民航空管运行单位

题型:单项选择题

钓鱼岛(TheDiaoyuIslands)自古就是我国固有领土,又称钓鱼台、钓鱼台群岛、钓鱼台列岛,位置在距温州市约356km、福州市约385km、基隆市约190km。若我国某海监船为维护我国对钓鱼岛主权,从温州出发去钓鱼岛巡航,到达钓鱼岛时航行了480km。则下列说法中不正确的是()

A.该海监船位移是480km,路程356km

B.该海监船位移是356km,路程480km

C.该海监船在海上航行时,确定其位置时可以将该海监船看成质点

D.若知道此次航行时间可求出此次航行的近似平均速度

题型:单项选择题

简述“暗佣”及“暗扣”的含义。

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