操作中遇有系统发生异常或故障，影响操作安全时，值班监控员应（）A、中止操作并汇报发令

碳弧气割是利用碳极电弧的高温，把金属局部加热到熔化状态，同时用( )把熔化金属吹掉，从而对金属进行切割的一种加工方法。

A．压缩空气的气流

B．压缩氧气的气流

C．高压水流

D．等离子气流

五、Cloze test(完形填空)20分

When Dave was eighteen,he bought a second-hand car for ￡200 so that he could travel to and from work more 　1　 than by bus.It worked quite well for a few years,but then it got so old,and it was costing him 　2　 much in repairs that he decided that he had better 　3　 it.

He asked among his friends to see if anyone was particularly 　4  to buy a cheap car,but they all knew that it was falling to pieces,so  5  of them had any desire to buy it.

Dave's friend Sam saw that he was  6  when they met one evening,and said,“What's  7 ,Dave?” Dave told him and Sam answered,“Well,what about advertising it in the paper? You may   8  more for it that way than the cost of the advertisement!” Thinking that Sam's   9  was sensible,he put an advertisement in an evening paper,which read:“For sale:small car,  10  very little petrol,only two owners.Bargain at ￡50.”

For two days after the advertisement first appeared,there was no   11 .But then on Saturday evening a man rang up and said he would like to  12  him about the car.“All right,” Dave said,feeling happy.He asked the man whether ten o'clock the next morning would be   13  or not.“Fine,” the man said.“And I'll  14  my wife.We intend to go for a ride in it to   15  it.”

The next morning,at ten quarter,Dave parked the car in the square outside his front door,  16  to wait there for the person who had   17  his advertisement.Even Dave had to   18  that the car really looked like a wreck.Then soon after he had got the car as   19  as it could be,a police car stopped just behind him and a policeman got out.He looked at Dave's car and then said,“Have you reported this   20  to us yet,sir?”

1.A.directly           B.safely                 C.properly                    D.easily

2.A.so                          B.such                          C.very                          D.too

3.A.keep               B.repair                 C.sell                           D.throw

4.A.anxious                  B.lucky                        C.ashamed                    D.generous

5.A.some               B.neither               C.none                         D.no one

6.A.calm               B.upset                         C.delighted                   D.astonished

7.A.no                         B.up                            C.it                       D.that

8.A.learn               B.miss                          C.get                            D.find

9.A.message                 B.advice                C.request               D.description

10.A.uses                     B.loses                         C.has                           D.spends

11.A.doubt                   B.help                          C.trouble               D.answer

12.A.tell                B.see                            C.agree                        D.call

13.A.exact                    B.suitable                     C.early                         D.late

14.A.follow                  B.meet                         C.bring                        D.introduce   

15.A.test               B.obtain                C.admire               D.recognize

16.A.failing           B.meaning                    C.turning               D.happening

17.A.read                     B.placed                C.answered                   D.understood

18.A.forget                   B.show                         C.disagree                    D.admit

19.A.clean                    B.crowded                    C.fast                           D.light

20.A.bargain          B.sale                           C.accident                    D.result

统计工作的前提与基础是（）。

A.设计

B.收集资料

C.整理资料

D.校对资料

E.分析资料

根据《全国消防条例》，同一建筑物有多个所有权人的，各所有权人应当（）负责建筑物的消防安全，落实消防安全管理责任

A.共同

B.分别

C.连带

D.协商

开始保护会阴的时机应在

A．宫口开全时

B．胎头开始拨露时

C．胎头着冠时

D．胎头拨露阴唇后联合紧张时

E．胎头复位后两肩开始娩出时