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【判断题】
两曲面立体相交,在一般情况下其是封闭的空间曲线。从的性质可知,求作曲面立体的作图过程可归纳为求曲面的共有点问题( )。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】Usually when a customer buys something, he wants to pay at a low price, but the seller prefers a high price. So the commercial strategy for a seller is to ask for a high price and give in slowly, whe...
【判断题】In "Documents Against Payment" term: Used when buyer wants to confirm that the goods have been shipped.
A.
正确
B.
错误
【简答题】说出FF、FR、RR、4WD驱动形式的含义?
【单选题】In international trade, when the buyer finds that the terms and conditions in the offer are acceptable, he may probably place an order promptly and then the transaction is concluded. However, if 1. _...
A.
the Business has to be negotiated on the renewed basis
B.
the offeree wants to accept the original offer
C.
the offeree deems the price is on the high side
D.
willingness to accept the offer
E.
a rejection of the offer
F.
the counter-offer will be accepted
【单选题】( )已知:电机转速1500r/m in= 1500转/分钟,编码器2000/200脉冲转,求编码器输出频率。
A.
125kHZ
B.
25kHZ
C.
50kHZ
D.
60kHZ
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