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【单选题】
光纤网络在安装时,光纤的弯曲半径不能小于()。
A.
15mm
B.
25mm
C.
40mm
D.
60mm
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举一反三
【单选题】Which of the following statements is NOT true?
A.
Elephants can be graceful.
B.
Tigers are too dangerous to be trained.
C.
Animals which are natural enemies can be trained to live together.
D.
Animals can become interested in their tricks.
【单选题】三相交流异步电动机的额定功率是指( )。
A.
输入的视在功率
B.
输入的有功功率
C.
输出的机械功率
D.
输出的无功功率
【单选题】设A、B为两个事件,且已知概率P(B)=0.84,P( B)=0.21,则概率P(AB)=
A.
1
B.
1.05
C.
0.63
D.
0.6
【单选题】'Either put it to the test yourself... 'in Paragraph (11) means ______.
A.
to experience the hopefulness
B.
to read Adams' book
C.
to offer someone a lift
D.
to be a hitchhiker
【简答题】在数据库的三级模式中,视图属于外模式,表属于( )
【多选题】教学目标的功能有
A.
导向功能
B.
调控功能
C.
激励功能
D.
评价功能
【单选题】教学目标的功能有
A.
教学目标可以提供分析教材和设计教学活动的依据;
B.
教学目标描述具体的行为表现,能为教学评价提供科学依据;
C.
教学目标可以激发学习者的学习动机;
D.
教学目标可以帮助教师评鉴和修正教学的过程。
【判断题】没有艺术接受的艺术结构是不完整的。
A.
正确
B.
错误
【单选题】设事件A,B为两个事件,且已知概率P(A)=3/5,P(A+B)=7/10,若事件A,B相互独立,则概率P(B)为
A.
1/16
B.
1/10
C.
1/4
D.
2/5
【单选题】All of the following are mentioned as evidence that elephants can recognize their own reflection EXCEPT:
A.
They do not try to engage their reflection in social behavior.
B.
They will use their reflection to help them clean themselves.
C.
They attempt to rub their trunks against their reflection in greeting.
D.
They will explore their reflection to see what they look lik
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