皮皮学，免费搜题
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【单选题】
在n=500的随机样本中，成功的比例为p=0．20，总体比例π的95％的置信区间为( )。A.
0．20±0．078
B.
0．20±0．028
C.
0．20±0．035
D.
0．20±0．045
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举一反三
【单选题】If you have a cold, you should _____________.
A.
use a handkerchief
B.
stay at home as you do not want to give your cold to other people
【单选题】采购认证包括以下一些流程: 1 初选供应商, 2 认证准备, 3 初次试制认证, 4 认证供应商评估,合理的流程为
A.
①②③④
B.
②①③④
C.
①②④③
D.
②①④③
【单选题】You should drink________water if you have a cold.
A.
little
B.
few
C.
a few
D.
a little
【单选题】If you have a cold, what symptoms may you get? ( )
A.
have a stuffy nose
B.
have a stomach
C.
have a toothache
D.
have a sprained ankle
【单选题】If you have a cold, you should _____. [ ]
A.
see the dentist
B.
drink cold water
C.
drink hot tea
D.
feel well
【单选题】If you have a cold , who will you be treated by?
A.
Dr. Gupta
B.
Dr. Cho
C.
Dr. Lottner
D.
Dr. David
【单选题】If you have a cold, stay at home so that you won't spread it to _____.
A.
another
B.
the other
C.
others
D.
the others
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