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【单选题】
下列各数中,有效数字位数为四位的是A.
1.0E-4
B.
0.1
C.
pH=10.00
D.
1000
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】（）是通用串行总线的英文缩写，它是日常使用最多的一种中、高速串行接口。
【简答题】__是通用串行总线的缩写,它是一种中、高速的最多可以连接127个设备的串行接口。
【单选题】I prefer _______ at home ________ the match.
A.
to stay; to watch
B.
staying; to watching
C.
staying; rather than watch
D.
stay; rather than watch
【单选题】I prefer _____ at home to _____ outside.
A.
staying; playing
B.
to stay; play
C.
staying; play
D.
to stay; playing
【单选题】The little boy is afraid of in the house..
A.
stay alone, lonely
B.
staying lonely, alone
C.
staying alone, lonely
D.
to stay lonely, lonely
【简答题】A. stay B. staying C. stayed D. staying
【单选题】I prefer________ at home to ______outside.
A.
staying, play
B.
to stay, play
C.
staying, playing
D.
to stay, playing
【简答题】这是一个大型的贵宾团,一切都要安排妥当,不能出差错。
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