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【单选题】
可作为水/油型乳剂的乳化剂,且为非离子型表面活性剂
A.
吐温类
B.
司盘类
C.
卵磷脂
D.
季铵化物
E.
肥皂类
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【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
【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.
【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.
【简答题】泌尿男性生殖器结核原发灶多在 ( )。
【判断题】术语“质量”不可使用形容词好、差或优秀来修饰。( )
A.
正确
B.
错误
【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.
【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
【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.
【单选题】泌尿男性生殖器结核原发灶多在()
A.
B.
附睾
C.
膀胱
D.
输尿管
E.
前列腺
【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 .
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