病原微生物根据危害不同可分为几类?分类的主要依据是什么?

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问题:

病原微生物根据危害不同可分为几类?分类的主要依据是什么?

考点:疾病预防控制知识竞赛微生物检验微生物检验题库
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开发软件所需高成本和产品的低质量之间有着尖锐的矛盾,这种现象称做( )。

A) 软件矛盾
B) 软件危机
C) 软件藕合
D) 软件产生

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As a result of the use of the new technology,the production of this product________50 percent.[ ]

A.has risen to  

B.has been raised to

C.has risen by  

D.has been risen by

题型:问答题 简答题

根据对话内容,在横线上填上适当的内容,使句子意思完整。

A: Hi, Bill, You're reading the novel again.

B: Yes, I'll never be tired of it.

A: 1_______

B: Three times. Every time I read it, I can learn something new.

A: Really? 2_______

B: Charles Dichens. I think he is a great writer, what about you?

A: 3_______ He is also my favorite foreign writer, please let me have a look at it.

B: OK, Here you are, what do you think of this novel?

A: 4_______ I haven't seen such a novel for long. Where did you buy it?

B: In the Rose Bookshop.

A: I don't know where it is. 5 _______

B: No, only 10 minutes' walk from here.

A: Oh, I see. Thank you.

B: You're welcome.

题型:问答题 简答题

风险监管员发现重大风险事项可()上报。

A.随时越级

B.定期越级

C.随时逐级

D.定期逐级

题型:问答题 简答题

下面哪个迹象最不可能像感染了计算机病毒()。

A.开机后微型计算机系统内存空间明显变小

B.开机后微型计算机电源指示灯不亮

C.文件的日期时间值被修改成新近的日期或时间(用户自己并没有修改)

D.显示器出现一些莫名其妙的信息和异常现象

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