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【单选题】
双框玻璃内外扇的净距为（）mm左右，而不宜过大，以免空气对流影响保温。A.
50
B.
100
C.
150
D.
200
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举一反三
【简答题】国家秘密载体的制作、收发、传递、使用、()，应当符合国家保密规定。 A复制 B保存 C维修 D销毁
【单选题】汽车的用途分类是根据GB/T 3730.1—2001和GB/T 15089—2001进行的，于（ ）年3月1日正式实施。
A.
2000
B.
2001
C.
2002
D.
2003
【单选题】完成下列各题 D Thomas Alva Edison was awarded more patents on inventions than any other American． When he died in l931，Americans wondered how they could best show their respect for him． One suggestion was t...
A.
he made the first electric light
B.
electric power was l00 years old
C.
the country realized electricitys importance
D.
he died in 1931
【简答题】D Thomas Alva Edison was awarded more patents on inventions than any other American. When he died in l931,Americans wondered how they could best show their respect for him. One suggestion was that the...
【简答题】国家秘密载体的制作、收发、_____、使用、_____、保存、维修和_____应当符合国家有关保密管理规定。
【简答题】()是给定的曲面做剪刀面来裁剪其他曲面。
【简答题】根据首字母提示完成单词。 1. Spring F________ is the most important in China. 2. Tony, what are our p________ at the weekend. 3. J________ is the first month of the year. 4. The sports meeting will l________ two d...
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