超声检查的目的是() A.确定有无占位性病变 B.判断是囊性还是实性肿块 C

题型:多项选择题

问题:

超声检查的目的是()

A.确定有无占位性病变

B.判断是囊性还是实性肿块

C.明确肿块的良恶性

D.仅为肿瘤良恶性提供信息

E.确定肿块与邻近重要血管的关系

考点:口腔颌面外科(医学高级)口腔颌面外科基础知识与基本操作口腔颌面外科基础知识与基本操作题库
题型:多项选择题

下列关于雌孕激素的作用的描述,哪些是错误的()

A.雌激素使宫颈黏液分泌增加

B.雌激素抑制输卵管节律性收缩的振幅

C.雌激素使乳腺管增生

D.孕激素使宫颈黏液变稀,拉丝度增加

E.孕激素促进乳腺腺泡发育

题型:多项选择题

如何训练学生的创造性思维

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阅读理解。

     Every year when the Italian artist Michelangelo's (1475-1564, 意大利文艺复兴时期著名雕刻家、画家、

建筑师) birthday comes around, computer users all over the world are filled with fear (害怕) and use their

computers with care. Some may even choose not to turn on their computers on March 3. All this fear and care

are just because a deadly computer virus is ready to cause damages (破坏) on that day.

     What's a computer virus then? Why do people get so afraid of it?

     A computer virus is, in fact, a little program that is put into other programs and that does something bad.

It is called a virus because, like any real-life viruses such as AIDs virus, it reproduces itself. And when these

programs are run, the virus is brought to life. It hides itself in your computer system waiting for the right

moment to make damages. And at the same time it keeps producing itself by copying itself onto other programs.

     The Michelangelo virus waits until the artist's birthday comes around, and then it will wake up to do very

bad things like destroying you files (毁坏文档). So next time when you turn on your computer, look out for

computer viruses!

1. The Italian artist Michelangelo _____.

A. was born six centuries ago

B. was born on March 3, 1475

C. died six centuries ago

D. died on March 3, 1564

2. Why are computer users full of fear on March 3? Because _____.

A. it is the birthday of a famous Italian artist

B. a kind of computer virus will come on that day

C. a deadly computer virus called "the Michelangelo virus" will wake up and then damages that day

D. something will easily go wrong with computers

3. In fact, a computer virus is _____.

A. a program which can be put into computers with some damages to them

B. a kind of real-life virus

C. a kind of virus like AIDS virus

D. also a kind of program which is placed into other programs and which makes damages

4. In fact, a computer virus is ready to cause damages _____.

A. any day

B. only on March 3

C. on Fridays

D. only on some famous artists' birthdays

题型:多项选择题

局域网中使用的传输介质有双绞线、同轴电缆和光纤等。10BASE-T采用3类UTP,规定从收发器到有源集线器的距离不超过 (64) m。100BASE-TX把数据传输速率提高了10倍,同时网络的覆盖范围 (65)

A.60

B.100

C.185

D.300

题型:多项选择题

在三型机中,缺少()时设备依然可以正常工作。

A.采集板程序芯片

B.系统支持板U4芯片

C.CUP板用户程序芯片

D.系统支持板U3芯片

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