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【单选题】
放射性物质包装件根据其外表面辐射水平和运输指数分为三个运输等级，其中1级为（）。A.
白色
B.
黄色
C.
红色
D.
黑色
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】In the dream Peter saw himself ___ by a fierce wolf, and he woke suddenly with a start.
A.
chased
B.
to be chased
C.
be chased
D.
having been chased
【单选题】In the dream Peter saw himself ________ by a fierce wolf, and he woke up with a start. [ ]
A.
chased
B.
to be chased
C.
be chased
D.
having been chased
【单选题】In the dream Peter saw himself _____ by a fierce wolf, and he woke suddenly.
A.
chased
B.
to be chased
C.
be chased
D.
having been chased
【简答题】阅读填词，根据短文内容，补全所缺单词，每空一词。 Peter and the Wolf This is a story about a brave boy. His name was Peter. Peter and his grandfather lived in a house next to the woods. In the summer, Peter liked to play outs...
【单选题】测定一般土壤pH值时,浸提液应选用 ____ ___ 。( )
A.
无二氧化碳的水
B.
1mol／L氯化钾
C.
0.01mol／L氯化钙
D.
0.01mol／L氯化镁
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