下列哪一项不是产肠毒素大肠埃希菌检验步骤() A.酶联免疫吸附试验检测LT B.酶联

题型:单项选择题 A型题

问题:

下列哪一项不是产肠毒素大肠埃希菌检验步骤()

A.酶联免疫吸附试验检测LT

B.酶联免疫吸附试验检测ST

C.双向琼脂扩散试验检测LT

D.家兔结肠袢试验检测ST

E.乳鼠灌胃试验检测ST

考点:预防疾控微生物检验技术预防疾控微生物检验技术综合练习预防疾控微生物检验技术综合练习题库
题型:单项选择题 A型题
完形填空 (10分)
These days computer games have become more and more popular in many cities and towns. A lot of small shops along busy streets have ___1___ into computer game houses in order to get more ___2___. These places are always crowded with teenagers.In the computer game houses,  teenagers ___3___ a lot of money on the games.
It’s ___4___ for one to beat(打赢) a computer, but one can get ahead(重新) after trying again and again. People want to win when they play computer games. The ___5___ they pay , the more they want to win, and at last they even can’t live without  it.
The results (结果) for school boys are ___6___. They couldn’t set(放在) their mind on their lessons. When school is over, they rush to the computer game houses near their schools. Some of them can get enough money from their parents. Some of them are not ___7___ to get the money. So they steal(偷) others’ ___8_ and become bad.
Computer game addiction (上瘾) is a __9___ problem in our life. Something has  to be done to stop it. ID card is good for _10___it.
小题1:
A.gotB.became C.changedD.gone
小题2:
A.boysB.moneyC.computersD.houses
小题3:
A.takeB.spendC.costD.pay
小题4:
A.timeB.easyC.goodD.hard
小题5:
A.moreB.manyC.gameD.miss
小题6:
A.even worseB.changedC.betterD.well
小题7:
A.happy enoughB.enough lucky
C.enough happyD.lucky enough
小题8:
A.bikeB. moneyC. computerD.watch
小题9:
A.seriousB.goodC.happyD.well
小题10:
A.to stopB.stopingC.stoppingD.stop
题型:单项选择题 A型题

甲公司参加某项目的投标,该项目招标文件开始发出之日为2009年9月1日,开标时间为2009年9月26日上午9点30分,投标有效期为90天。甲公司修改投标文件应在()进行。

A.2009年12月25日上午9点30分前 

B.2009年9月26日上午9点30分前 

C.2009年9月26日上午9点30分后 

D.2009年11月31日前

题型:单项选择题 A型题

下列电磁污染形式不属于人为的电磁污染的是()。

A、脉冲放电

B、电磁场

C、射频电磁污染

D、火山爆发

题型:单项选择题 A型题

系统安全

题型:单项选择题 A型题

工艺空气露点超标,原因可能是()。

A.硅胶再生效果差

B.硅胶失效

C.冷吹过程中混入环境空气

D.以上三种都有可能

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