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【简答题】
组合曲面在CAD/CAM中是一个较难解决的问题,现在比较常用的组合曲面的数学处理方法有
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举一反三
【单选题】以下表述中错误的是 ?
A.
共振论是用经典结构式表述复杂的离域体系
B.
任何极限结构都能代表真实分子
C.
只有共振杂化体才能确切反应一个分子、离子或自由基的真实结构
D.
一个分子写的极限结构式越多,说明电子离域可能性越大,该分子越稳定
【判断题】The farmer couldn’t plant the potatoes because it was not the right season. ( ) 2. His wife was not strong enough to do the digging. ( ) 3. There were no friends or neighbors willing to help out. ...
A.
正确
B.
错误
【单选题】听力原文：We are a new and growing firm in the area. And we're willing to do our best to attract customers away from our competitors with more favorable terms. (29)
A.
We cannot compete with our rivals, since we have just started our business here.
B.
We want to have more customers, so we're ready to make more favourable offers.
C.
We are unable to provide the best service here, because we do not have enough competitive advantage.
D.
We plan to merge our competitors in this area, as we are growing and have more customers.
【简答题】The child is always (willing) ______ to do his homework, so he has not made much progress.
【单选题】Li: Well, Chinese food divided into 8 kinds of cuisines, such as Cantonese food, Shandong food, Sichuan food etc. Which kind dish you like? Wang: Are there any difference?
A.
do
B.
are
C.
would
D.
did
【简答题】I. Translate the following sentences from English into Chinese. ( 4*5=20 points ) 46. The department may not be able to process your application if you do not provide sufficient information . 47. An o...
【简答题】连杆由小头、杆身和 _____ 三部分组成。连杆 与活塞销相连。
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