若VHF收发信机的工作频率范围为118.000MHz至136000MHz,则该收发新

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问题:

若VHF收发信机的工作频率范围为118.000MHz至136000MHz,则该收发新机可用通信波道数为()

A.760

B.721

C.740

考点:甚高频通信系统VHF考试甚高频通信系统VHF考试题库
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I’m not so sure I like my friends any more. I used to like them-to be honest. We’d have lunch, talk on the phone or exchange emails, and they all seemed normal enough. But then came Face Book, and I was introduced to a sad fact: many of my friends have dark sides that they had kept from me.

Today my friends show off the more unpleasant aspects of their personalities via FaceBook. No longer hidden, they’re thrown in my face like TV commercials -unavoidable and endless advertisements for the worst of their personalities.

Take Fred. If you were to have lunch with him, you’d find him warm, and self-effacing(谦逊的).Read his FaceBook and you’ll realize he’s an unbearable, food-obsessed boring man. He’d pause to have a cup of coffee on his way to save a drowning man-and then write about it.

Take Andy. You won’t find a smarter CEO anywhere, but now he’s a CEO without a company to run. So he plays Mafia Wars on FaceBook. He’s doing well-level 731. Thanks to FaceBook, I know he’s playing about 18 hours a day. Andy, you’ve run four companies-and this is how you spend your downtime? What happned to golf?What happened to getting another job?

Take Liz. She is positive that the flu vaccine will kill us all and that we should avoid it. And then comes Chris who likes to post at least 20 times a day on every website he can find, so I get to read his thoughts twice, once on FaceBook and once on Twitter.

In real life, I don’t see these sides of people. Face to face, my friends show me their best. They’re nice, smart people. But face to FaceBook, my friends is like a blind date which goes horribly wrong.

I’m left with a dilemma. Who is my real friend?Is it the Liz I have lunch with or the anti-vaccine madman on FaceBook? Is it the Fred I can grab a sandwich with or the Fred who weeps if he’s at a party and the wine isn’t up to his standard?

小题1: Who is opposed to the flu vaccine in the text?

A.Fred

B.Andy

C.Liz

D.Chris小题2:What’s Andy probably busy in doing now?

A.He’s running his company

B.He’s playing golf all day

C.He’s looking for another job

D.He’s playing computer games小题3:According to the text, FaceBook tends to _______.

A.present another side of people

B.offer some foods for free

C.show endless advertisements

D.get you to more parties小题4:The text is developed mainly by _____.

A.giving examples

B.following the time order

C.listing figures

D.raising questions

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小刚为了研究热传递过程中温度变化与时间的关系,他将装有热奶的奶瓶放入室温的水中,如图所示.小刚每隔一定的时间记录一次水温,作出了图所示的图象.请你根据图象判断,大约经过______min,热奶和水达到了热平衡,此时的水温约为______℃.

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属于潴留性囊肿的是()

A.皮脂腺囊肿

B.皮样囊肿

C.鳃裂囊肿

D.表皮样囊肿

E.甲状舌管囊肿

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患者男性,44岁。饱餐后上腹部剧痛7小时,伴恶心呕吐,呕吐物为胃内容物,吐后腹痛更加剧,如刀割样。查体:体温37.8℃,脉搏124次/分,血压80/50mmHg,痛苦面容,腹胀,全腹肌紧张,压痛及反跳痛,上腹部为重,肠鸣音消失,肝浊音区存在,右下腹穿刺得淡红色血性液体。白细胞12×109/L,血淀粉酶320温氏单位,血钙1.5mmol/L,诊断应考虑()

A.溃疡病穿孔,弥漫性腹膜炎

B.胆囊穿孔,弥漫性腹膜炎

C.急性胃炎

D.急性出血坏死性胰腺炎

E.急性绞窄性肠梗阻

题型:单项选择题

古代医患关系特点( )

A.尊重患者的生命价值,确立双向作用的医患关系

B.医患关系的个体性、稳定性、直接性

C.医患关系的间接性、多元性、易变性

D.医患关系的分解趋势和物化趋势

E.扩大医学服务的范围

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