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【判断题】
在栅格数据结构中，一个点是由一个栅格单元来表达的。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】据柴油机所需冷却的零部件、机油及增压空气的不同要求，冷却水系统分为高温冷却水系统和（）冷却水系统。
【单选题】Paul seems ________ Chinese before he came here.
A.
to learn
B.
to have learned
C.
to be learning
D.
to be learned
【单选题】—Paul seems upset today． —Yes，he wrote an application letter to Neusoft but waited__________for a reply .
A.
in vain
B.
in order
C.
in time
D.
in return
【单选题】听力原文：W: It seems Paul doesn't make any progress in science. M: If Paul were my son, I'd just not worry about him. You are already giving him special help after school, you say, so I doubt he'll fail t...
A.
Consult the science teacher.
B.
Improve the teaching skills.
C.
Stop teaching Paul after class.
D.
Take it easy and let it be.
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