A．People can know everything.B．People can have access to large amount of information.C
A. People can know everything.
B. People can have access to large amount of information.
C. People no longer read newspaper.
D. People began to rely heavily on computer.
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对旅客携带用于人体的特殊物品入境的，必须事先申请办理检疫审批，但携带出境的不需办理。 ()
A. 正确
B. 错误
A．Ctrl+DelereB．Alt+DeleteC．Shift+DeleteD．Delete
A. Ctrl+Delere
B. Alt+Delete
C. Shift+Delete
Delete
测定了8例正常人与8例Ⅰ期矽肺病人的血清黏蛋白(mg/100ml)，得如下结果。8例正常人结果：均数：58.09；标准差＝12.668例Ⅰ期矽肺病人结果：均数：79.03；标准差＝11.60
欲分析正常人和工期矽肺病人的血清黏蛋白均数是否不同，可采用
A. 配对设计的t检验
B. 样本均数与总体均数比较的t检验
C. 成组设计的两样本均数比较的t检验
D. 成组设计的两大样本均数比较的u检验
E. 以上都不行
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