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【单选题】
下列哪个不是超声波的特点?
A.
折射和反射
B.
频率越高,越接近光的特性
C.
直线传播
D.
传播速度远高于普通声音
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参考答案：
举一反三
【判断题】人们在资源开发和产品制造过程中,可能产生废物,但不是所有产品经过使用和消费后都会变成废物的。
A.
正确
B.
错误
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【单选题】Which of the following can be inferred from paragraph 4 about the third zone?
A.
It is the most expensive area in which to live.
B.
It does not have factories and businesses.
C.
People who live there travel long distances to work.
D.
Most of the residents there work and live in the same zone.
查看完整题目与答案
【简答题】Questions 18～21 are based on the following dialogue in a travel agency. Which city is the man going to visit? [A] Oxford. [B] Paris. [C] Shaftsbury. [D] London.
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【简答题】泌尿男性生殖器结核原发灶多在 （ ）。
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【单选题】Which of the following is NOT the author's viewpoint?
A.
Acting like performers spoils the message in a speech.
B.
Perfection of scripts is necessary in making good impressions.
C.
Acting naturally means less dependence on the prepared script.
D.
There should be a balance between actual acting and acting naturally.
查看完整题目与答案
【单选题】A certain water delivery pipeline uses an IS50-32-200 centrifugal pump to send the water in the low-level open trough to the open trough which is 3 m higher than the low-level open trough. After the v...
A.
Series connection
B.
Parallel connection
C.
A and B
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【单选题】Which of the following is the place of greatest altitude on a mountain?
A.
The foot of the mountain.
B.
8,500 feet up the mountain.
C.
The top of the mountain.
D.
15,785 feet up the mountain.
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【单选题】佝偻病患儿,骨样组织堆积引起的主要表现是:
A.
颅骨软化
B.
烦躁
C.
睡眠不安
D.
出牙延迟
E.
肋骨串珠
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【单选题】泌尿男性生殖器结核原发灶多在（）
A.
肾
B.
附睾
C.
膀胱
D.
输尿管
E.
前列腺
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【单选题】A rock is thrown off a 30 m cliff at a 45° angle above the horizontal. Which is the following is true regarding the acceleration of the rock? (air resistance is negligible)
A.
The acceleration will be of magnitude g and have both horizontal and vertical components.
B.
At the peak of the rock’s path, the magnitude of acceleration will be half of what it was when the rock was initially thrown.
C.
The acceleration will be of magnitude g and in a downward direction.
D.
The acceleration will be downward during the rock’s ascent and upward during the rock’s descent.
E.
The acceleration will increase throughout the rock’s flight .
查看完整题目与答案
相关题目：
【判断题】人们在资源开发和产品制造过程中,可能产生废物,但不是所有产品经过使用和消费后都会变成废物的。
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following can be inferred from paragraph 4 about the third zone?
A.
It is the most expensive area in which to live.
B.
It does not have factories and businesses.
C.
People who live there travel long distances to work.
D.
Most of the residents there work and live in the same zone.
查看完整题目与答案
【简答题】Questions 18～21 are based on the following dialogue in a travel agency. Which city is the man going to visit? [A] Oxford. [B] Paris. [C] Shaftsbury. [D] London.
查看完整题目与答案
【简答题】泌尿男性生殖器结核原发灶多在 （ ）。
查看完整题目与答案
【单选题】Which of the following is NOT the author's viewpoint?
A.
Acting like performers spoils the message in a speech.
B.
Perfection of scripts is necessary in making good impressions.
C.
Acting naturally means less dependence on the prepared script.
D.
There should be a balance between actual acting and acting naturally.
查看完整题目与答案
【单选题】A certain water delivery pipeline uses an IS50-32-200 centrifugal pump to send the water in the low-level open trough to the open trough which is 3 m higher than the low-level open trough. After the v...
A.
Series connection
B.
Parallel connection
C.
A and B
查看完整题目与答案
【单选题】Which of the following is the place of greatest altitude on a mountain?
A.
The foot of the mountain.
B.
8,500 feet up the mountain.
C.
The top of the mountain.
D.
15,785 feet up the mountain.
查看完整题目与答案
【单选题】佝偻病患儿,骨样组织堆积引起的主要表现是:
A.
颅骨软化
B.
烦躁
C.
睡眠不安
D.
出牙延迟
E.
肋骨串珠
查看完整题目与答案
【单选题】泌尿男性生殖器结核原发灶多在（）
A.
肾
B.
附睾
C.
膀胱
D.
输尿管
E.
前列腺
查看完整题目与答案
【单选题】A rock is thrown off a 30 m cliff at a 45° angle above the horizontal. Which is the following is true regarding the acceleration of the rock? (air resistance is negligible)
A.
The acceleration will be of magnitude g and have both horizontal and vertical components.
B.
At the peak of the rock’s path, the magnitude of acceleration will be half of what it was when the rock was initially thrown.
C.
The acceleration will be of magnitude g and in a downward direction.
D.
The acceleration will be downward during the rock’s ascent and upward during the rock’s descent.
E.
The acceleration will increase throughout the rock’s flight .
查看完整题目与答案
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