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【单选题】
下列关于隐形飞机的原理，说法错误的是（ ）。
A.
外层涂料的颜色为天蓝色或者银白色，以避免被雷达发现
B.
隐形飞机采用非金属材料或者雷达吸波材料，吸收而不是反射雷达波
C.
改进发动机的进气道和尾喷口等所有能产生镜面反射的表面，以减少对雷达波的反射
D.
除了发动机、电子设备等部件，其他飞机上的部件用透波材料来制作
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参考答案：
举一反三
【单选题】听力原文：W: You had met Professor Black before,right?How would you describe his lectures? M: Well,let me put it this way: I could never stay awake in one of his classes without first drinking at least two...
A.
He is fond of drinking coffee.
B.
Professor Black's lectures were interesting.
C.
He skipped Professor Black's classes.
D.
Professor Black's lectures were boring.
查看完整题目与答案
【单选题】听力原文：M: Oh, my shirt sleeve. Must have gotten caught on that nail. W: Here, let me take a look. M: What do you think of it? W: Hmm with a needle and thread, this can be mended and look just like new. ...
A.
The man will have to buy a new shirt.
B.
The shirt looks just like the man's new one.
C.
The shirt can be repaired easily.
D.
The man shouldn't put sharp objects in his shirt pocket.
查看完整题目与答案
【简答题】American middle school students don’t seem to care that they’re worse at maths than their counterparts (同龄人) in China’s Hong Kong and Finland. “I don’t need it,” my student says, “I’m going to be a ba...
查看完整题目与答案
【单选题】听力原文：M: May I see a hat, please? W: What size do you take? M: Sorry, I don't know. W: Let me take the measure...You take size 6. What color hat would you like? M: Brown, please. W: Here are some nice ...
A.
Blue.
B.
Black.
C.
Brown.
D.
Green.
查看完整题目与答案
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
She attended Prof. Smith's class for three times.
B.
She finds Prof. Smith's class fascinating.
C.
She doesn't like the professor's class.
D.
Prof. Smith always looks at his watch during the class.
查看完整题目与答案
【单选题】听力原文：W：I understand you dropped Professor Jordan's classes and took one of Professor George's classes，didn't you? Is he that interesting? M：Let me put it this way. I can safely say I will never need a...
A.
Professor George's class is too boring.
B.
Professor Jordan's class is more interesting.
C.
Professor George's class is very interesting.
D.
Professor George never allows students to drink coffee in class.
查看完整题目与答案
【单选题】听力原文：M：I'm not quite sure how to put this．But about that calculator you let me use，I dropped it, and now the on button doesn’t light up． W：Oh! That's OK．It hasn't been working right for some time now....
A.
He lost a button at work.
B.
He doesn't know where he put the calculator.
C.
He thought he broke something the woman lent him.
D.
He's not sure how to solve the math problem.
查看完整题目与答案
【判断题】口底、颌下蜂窝织炎容易导致呼吸困难，甚至窒息，所以当成脓后及时切开引流
A.
正确
B.
错误
查看完整题目与答案
【单选题】口底、颌下蜂窝织炎容易导致
A.
面部皮下感染
B.
呼吸困难、窒息
C.
吞咽困难
D.
纵膈化脓性感染
E.
败血症
查看完整题目与答案
【单选题】隙感染中何种最容易导致呼吸困难
A.
眶下间隙
B.
翼颌间隙
C.
咬肌间隙
D.
下颌下间隙
E.
口底蜂窝织炎
查看完整题目与答案
相关题目：
【单选题】听力原文：W: You had met Professor Black before,right?How would you describe his lectures? M: Well,let me put it this way: I could never stay awake in one of his classes without first drinking at least two...
A.
He is fond of drinking coffee.
B.
Professor Black's lectures were interesting.
C.
He skipped Professor Black's classes.
D.
Professor Black's lectures were boring.
查看完整题目与答案
【单选题】听力原文：M: Oh, my shirt sleeve. Must have gotten caught on that nail. W: Here, let me take a look. M: What do you think of it? W: Hmm with a needle and thread, this can be mended and look just like new. ...
A.
The man will have to buy a new shirt.
B.
The shirt looks just like the man's new one.
C.
The shirt can be repaired easily.
D.
The man shouldn't put sharp objects in his shirt pocket.
查看完整题目与答案
【简答题】American middle school students don’t seem to care that they’re worse at maths than their counterparts (同龄人) in China’s Hong Kong and Finland. “I don’t need it,” my student says, “I’m going to be a ba...
查看完整题目与答案
【单选题】听力原文：M: May I see a hat, please? W: What size do you take? M: Sorry, I don't know. W: Let me take the measure...You take size 6. What color hat would you like? M: Brown, please. W: Here are some nice ...
A.
Blue.
B.
Black.
C.
Brown.
D.
Green.
查看完整题目与答案
【单选题】Section A Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the ...
A.
She attended Prof. Smith's class for three times.
B.
She finds Prof. Smith's class fascinating.
C.
She doesn't like the professor's class.
D.
Prof. Smith always looks at his watch during the class.
查看完整题目与答案
【单选题】听力原文：W：I understand you dropped Professor Jordan's classes and took one of Professor George's classes，didn't you? Is he that interesting? M：Let me put it this way. I can safely say I will never need a...
A.
Professor George's class is too boring.
B.
Professor Jordan's class is more interesting.
C.
Professor George's class is very interesting.
D.
Professor George never allows students to drink coffee in class.
查看完整题目与答案
【单选题】听力原文：M：I'm not quite sure how to put this．But about that calculator you let me use，I dropped it, and now the on button doesn’t light up． W：Oh! That's OK．It hasn't been working right for some time now....
A.
He lost a button at work.
B.
He doesn't know where he put the calculator.
C.
He thought he broke something the woman lent him.
D.
He's not sure how to solve the math problem.
查看完整题目与答案
【判断题】口底、颌下蜂窝织炎容易导致呼吸困难，甚至窒息，所以当成脓后及时切开引流
A.
正确
B.
错误
查看完整题目与答案
【单选题】口底、颌下蜂窝织炎容易导致
A.
面部皮下感染
B.
呼吸困难、窒息
C.
吞咽困难
D.
纵膈化脓性感染
E.
败血症
查看完整题目与答案
【单选题】隙感染中何种最容易导致呼吸困难
A.
眶下间隙
B.
翼颌间隙
C.
咬肌间隙
D.
下颌下间隙
E.
口底蜂窝织炎
查看完整题目与答案
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