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【单选题】
用纸层析法分离叶绿体中的色素,四种色素扩散速度最快和最慢的分别是 [     ]
A.
叶绿素a ;胡萝卜素
B.
叶绿素b ;胡萝卜素
C.
胡萝卜素;叶绿素a
D.
胡萝卜素;叶绿素b
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举一反三
【多选题】川剧最引入注目的独门特技是( )等,被誉为 “川剧的绝活”。
A.
变脸
B.
高腔
C.
帮腔
D.
滚灯
E.
踢慧眼
【判断题】标准成本是正常生产经营条件下应该实现的,可以作为控制成本开支、评价实际成本、衡量工作效率的依据和尺度的一种目标成本。
A.
正确
B.
错误
【判断题】国家标准GB7588-2003的名称是《电梯制造与安装安全规范》
A.
正确
B.
错误
【简答题】《电梯制造与安装安全规范》(GB7588—2003)对层门导向装置有何要求?
【简答题】The problem for young people who want to find a job is that there are a lot of people who have no jobs in Australia. The choice that young people can make depends more and more on their final examinat...
【简答题】Just 25 years ago, the top three career hopes for young people in Britain were teacher, banker and doctor. Now, they want to be sports star, pop star and actor, according to a survey by the Guardian n...
【单选题】The World Digital Library mainly targets______.
A.
young people in the U.S.
B.
children of poor countries
C.
students all over the world
D.
scholars understanding English
【简答题】阅读理解。 Just 25 years ago, the top three career hopes for young people in Britain were teacher, banker and doctor. Now, they want to be sports star, pop star and actor, according to survey by the Guardi...
【简答题】《电梯制造与安装安全规范》(GB7588—2003)假设电梯零部件应达到哪些基本要求?
【简答题】阅读理解。 Just 25 years ago, the top three career hopes for young people in Britain were teacher, banker and doctor. Now, they want to be sports star, pop star and actor, according to a survey by the Guar...
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