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【判断题】
一个正规比赛专用橄榄球的额定重量，应在122.72～425.24克。（ ）
A.
正确
B.
错误
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举一反三
【单选题】根据中国药典规定重金属是指（）
A.
比重大于5的金属
B.
Fe3+，Hg2+，Pb2+
C.
在弱酸性溶液中能与H2S作用显色的金属杂质
D.
铅离子
E.
在实验条件下能与S2—作用显色的金属杂质
【单选题】A hundred years ago, the game we now call football did not exist. American football started during a game between two colleges. The teams had got together to play what they called "football", but each...
A.
soccer and rugby
B.
American football and British football
C.
two village ball games
D.
two new football games
相关题目：
【单选题】根据中国药典规定重金属是指（）
A.
比重大于5的金属
B.
Fe3+，Hg2+，Pb2+
C.
在弱酸性溶液中能与H2S作用显色的金属杂质
D.
铅离子
E.
在实验条件下能与S2—作用显色的金属杂质
【单选题】A hundred years ago, the game we now call football did not exist. American football started during a game between two colleges. The teams had got together to play what they called "football", but each...
A.
soccer and rugby
B.
American football and British football
C.
two village ball games
D.
two new football games
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