皮皮学，免费搜题
登录
搜题
【单选题】
下列( )分布是标准正态分布。A.
X2分布
B.
t分布
C.
z分布
D.
对称分布
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Mary ______ at the bus stop for about an hour when Tom finally came and started to argue about what ______ before.
A.
waited, happened
B.
have waited, has happened
C.
had waited, was happened
D.
had been waiting, had happened
【单选题】The old man started living in the old house ______Tom was born.
A.
as soon as
B.
long, long before
C.
soon after
D.
years after
【单选题】The reason why Tom started his AWeber is that _______.
A.
he tried to create tools for effective email follow up
B.
sales experts around the world asked him to help
C.
he tried to build the trust among the small businesses
D.
he wanted to help business owners do business online
【单选题】Tom took out a piece of paper he and started reading in a clear tone.
A.
was preparing
B.
would prepare
C.
have prepared
D.
had prepared
【单选题】With everything ________, the teacher started the slide show.
A.
in the place of
B.
in places
C.
in the place
D.
in place
相关题目：