“万丈高楼平地起”,启示我们实现人生价值的重要途径是[ ]
A.从日常生活的点滴小事做起
B.树立崇高远大的理想
C.不断提升自我素质
D.不断地创造发明
答案:A
In order to test whether the mean IQ of employees in an organization is greater than 100, a sample of 30 employees is taken and the sample value of the computed test statistic, tn-1=3.4. The null and alternative hypotheses are:()
A. H0:μ=100; Ha:μ≠100.
B. H0:μ≤100; Ha:μ>100.
C. H0:μ=100; Ha:X≠100.
Hereisyourbill的意思是()。
A、请客人看账单
B、客人要询问价格
C、客人要看酒单
D、客人要发票