皮皮学，免费搜题
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【单选题】
若总例数相同，则资料的t检验与配对资料t检验相比()。A.
t检验的效率高些
B.
配对t检验的效率高些
C.
两者效率相等
D.
两者效率相差不大
E.
两者效率不可比
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反馈参考答案：
举一反三
【单选题】There are ______________ paper cups beside the water-heater, too. I’ll show you how to use the heater.
A.
free
B.
small
C.
cheap
D.
expensive
【简答题】C51编译器支持的存储类型有data, , , ,code和pdata.
【单选题】There are free ______________ beside the water-heater, too. I’ll show you how to use the heater.
A.
plastic bowls
B.
paper bowls
C.
plastic cups
D.
paper cups
【简答题】There are ______________ paper cups beside the water-heater, too. I’ll show you how to use the heater.
【单选题】I’ll show you how to accomplish each step________ in the next several section.
A.
in turn
B.
in fact
C.
in place
D.
in time
【简答题】There are free ______________ beside the water-heater, too. I’ll show you how to use the heater.
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