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【简答题】
( )是指按给的起始角度、终止角度,将曲线绕一轴线旋转而成的轨迹曲面
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参考答案:
举一反三
【判断题】纤维抵抗磨损的能力叫做耐用性( )
A.
正确
B.
错误
【单选题】They're _____ Australia. We're Chinese. [     ]
A.
come from
B.
coming from
C.
from
D.
for
【单选题】Although students may be in a ______ position, teachers shall treat them as equals.
A.
subsidiary
B.
submarine
C.
subordinate
D.
subsequent
【单选题】通常所说的“裸机”是指仅有( )的计算机
A.
硬件系统
B.
软件
C.
指令系统
D.
CPU
【单选题】A)Specify what they would like to do after graduation. B)Describe in detail how much they would enjoy studying. C)Indicate they have reflected and thought about the subject. D)Emphasize that they admi...
A.
B.
C.
D.
D
【单选题】Some teachers are concerned about distance learning because______.
A.
it may lead to an information gap between the rich and the poor
B.
it contradicts the traditional concept of education
C.
it will take the place of books and teachers
D.
it requires universities to make a heavy investment
【单选题】德国思想家席勒和英国心理学家斯宾塞将游戏看作是()
A.
剩余精力的无目的的消耗
B.
种族的过去活动习惯的延续和再现
C.
未来生活需要的活动的准备
D.
潜意识中的本能和欲望在活动中的宣泄
【简答题】Suppose you are invited by Professor Williams to give a presentation about Chinese culture to agroup of international students. Write a reply to 1)Accept the invitation, and 2)Introduce the key points...
【单选题】Suppose, on arriving in Shanghai by Cathy Pacific flight on Thursday, you're told to return to Hong Kong by Cathy Pacific Airways immediately. Now the most proper way is ______.
A.
to take the same day’s flight from Shanghai to Hong Kong
B.
to stay in Shanghai and take the Friday’s flight from Beijing to Hong Kong
C.
to go to Beijing and take the Friday’s flight
D.
to wait until Saturday
【单选题】使用半波高度法测定小于声束直径的缺陷尺寸时,所测的结果( )
A.
小于实际尺寸
B.
接近声束宽度
C.
稍大于实际尺寸
D.
等于晶片尺寸
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