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【单选题】
设冷抽铜丝的折断力服从正态分布 ,从一批铜丝任取10根,测得折断力的样本方差为75.73,则方差 的0.9的置信区间为( )
A.
(40,204)
B.
(41,210)
C.
(41.25,204.5)
D.
(40.284,204.984)
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举一反三
【单选题】That was the reason______ Mac gave me the other day. [     ]
A.
why
B.
for that
C.
which
D.
for which
【单选题】My biggest regret was giving up sports because that was the reason for my tremendous weight gain in the first place .
A.
in all modesty
B.
in the ultimate
C.
in all likelihood
D.
in the beginning
【单选题】That was the reason________he was late for school.
A.
that
B.
which
C.
/
D.
for which
【单选题】1919年6月20日,来中国访问的杜威在写给他女儿的信中说:“要使我们国家14岁多的孩子领导人们展开一场大清扫的政治改革运动,并使商人和各行各业的人感到羞愧而加入他们的队伍,那是难以想像的。这真是一个了不起的国家„„”在当时的中国之所以出现这一现象,其主要原因()是
A.
戊戌变法促进了中国人民的觉醒
B.
新文化运动使人们的思想得到了空前的解放
C.
马克思列宁主义在中国的广泛传播
D.
中国共产党的成立使中国革命进入了新阶段
【单选题】以下不属于中国共产党领导中国人民取得的胜利的是( )。
A.
领导北伐战争
B.
推翻国民党反动统治,完成新民主主义革命,建立了中华人民共和国
C.
进行改革开放新的伟大革命
D.
完成社会主义革命,确立社会主义基本制度
【单选题】What was the reason that made the experiment nearly cancel?
A.
The loudness of the sound waves.
B.
The fear of sea animals.
C.
The fear of the confusion and harm caused by sound waves.
D.
The noise of the experiment.
【简答题】1 es= 、 ei= 、 T f= 、 ES= 、 EI=
【单选题】That was the reason ___________ Mac gave me the other day.
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that
B.
what
C.
why
D.
for which
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【多选题】GW5-110型隔离开关是____________结构的隔离开关。
A.
“U”型;
B.
“V”型;
C.
单柱式;
D.
双柱式;
E.
水平旋转式;
F.
垂直旋转式。
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