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【单选题】
两组数据中的每个变量值减去同一常数后作两样本均数差别的t检验,t值( )。A.
变小
B.
变大
C.
不变
D.
变小或变大
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反馈参考答案：
举一反三
【简答题】对重要事项或重大行动作出安排，应使用的文种是：
【单选题】—Drinking tea is a common practice in daily life, isn’t it? —Yes, teahouses continue to __________up in and around the city of Nanjing.
A.
spring
B.
split
C.
break
D.
cut
【单选题】Everyone is working harder, and living a happier life now, ______?
A.
isn't one
B.
aren't we
C.
isn't it
D.
aren't they
【简答题】细胞水平代谢调节通过调节关键酶的 ______ 与 ______ 从而调节代谢的速度和强度。
【单选题】It may be a piece of ____ to learn to drive an automobile but many new drivers are afraid to drive on crowded city streets until they have more experience.
A.
paper
B.
tolerance
C.
book
D.
cake
【单选题】Money is important in my life, but it isn’t_______ to me.
A.
everything
B.
something
C.
nothing
D.
anything
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