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【单选题】
有利于辐射雾形成的条件是（）。 Ⅰ．白天；Ⅱ．微风；Ⅲ．近地面水汽充沛；Ⅳ．晴天；Ⅴ．夜间；Ⅵ．秋冬季节。A.
Ⅰ～Ⅳ，Ⅵ
B.
Ⅱ～Ⅵ
C.
Ⅱ～Ⅵ
D.
Ⅱ，Ⅳ～Ⅵ
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【单选题】But they also asked if it was good enough to2 in computer science due to their fears of getting bad grades in hard subjects they had little 3to. They also were concerned about how to “know” if comput...
A.
opt
B.
minor
C.
shape
D.
dwarf
【简答题】图示的元件为()位()通换向阀
【简答题】A new research study has found that, ____1______ what parents might believe, there is an enormous gap between what they think their children are doing online and what is ___2_____ happening. In one pa...
【简答题】78×5 这个算式表示：______ 5×0.78 这个算式表示：______ 5.34÷2.1 这个算式表示：______．
【单选题】运用加法的交换律和结合律的是 [ ]
A.
5.84+0.78+4.16=5.84+4.16 +0.78
B.
5.84+0.78+4.16=0.78+（5.84 +4.16）
C.
5.84+0.78+4.16=5.84+（0.78 +4.16）
【简答题】A new research study has found that, __________ (1) what parents might believe, there is an enormous gap between what they think their children are doing online and what is __________ (2) happening. I...
【简答题】在○里填上“＞”、“＜”或“=” 0.78÷0.99○0.78； 7.8×1.3○7.8； 9.027×100○9.027÷0.01．
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