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【多选题】
关于假设检验的两类错误,下列说法正确的有()
A.
第一类错误被称为弃真错误
B.
第一类错误被称为错误
C.
第二类错误被称为错误
D.
第二类错误是原假设不正确,但却被接受的错误
E.
第一类错误是原假设正确,但却被拒绝的错误
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【单选题】早在20世纪70年代,就有人用水晶胶制作标牌,尽管它具有天然水晶的效果,但由于当时水晶胶的质量与制作工艺所限,水晶胶制作的标牌( )与( )都较差。
A.
透明度 耐划伤性
B.
不透明 耐划伤性
C.
都对
D.
都不对
【简答题】阅读理解。 The following are four kinds of medicine at home. We should know how to use them. Never make any mistakes. (1) Take the medicine with water. One pill (片) every eight hours. For further nighttime...
【单选题】The chief editor thought he took some liberties with the original in translation. So it was necessary that he make the ______ suggested.
A.
alterations
B.
alternatives
C.
alternations
D.
altercation
【单选题】According to the governor, why should one use solar panels?
A.
The new law requires every resident to install them.
B.
They are environmentally friendly and efficient.
C.
The energy industry needs to be supported.
D.
They costs less to install than the conventional method.
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【判断题】On one level of the speech we should use only one organization method.
A.
正确
B.
错误
【单选题】在外宾团的首站地接站时,全陪的主要任务是(),并与领队接洽做好相关协助工作。p98
A.
认找旅游团
B.
安排旅游车
C.
清点和交接行李
D.
配合地陪迅速认找到旅游团
【单选题】The chief editor thought he took some liberties with the original in translation. So it was necessary that he make the ______ suggested.
A.
alterations
B.
alternatives
C.
alternations
D.
altercations
【判断题】Wilbur thought he was too young to go out in the world alone.
A.
正确
B.
错误
【单选题】Although he thought he was helping us to prepare the dinner, he was actually ______ the way.
A.
in
B.
off
C.
by
D.
on
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