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【单选题】
根据《幼儿园工作规程》的规定,在正常情况下幼儿园幼儿每日的户外活动时间不得少于( )小时。A.
1
B.
2
C.
3
D.
4
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举一反三
【单选题】According to the speaker, when are hippos likely to yawn?
A.
When they are swimming.
B.
When they are quarreling.
C.
When they are socializing.
D.
When they are eating.
【判断题】For a random signal X(t), when t equals to t1, X(t1) can be regarded as a random process.
A.
正确
B.
错误
【简答题】A．They have accidents when they try to outrun other boats. B．They fall overboard when they stand up in their boat. C．They sit or lie on the bottom of their boat. D．They fall asleep and water enters th...
【单选题】According to the speaker, when are hippos likely to yawn?
A.
when they are swimming.
B.
when they are quarreling.
C.
When they are socializing.
D.
when they are eating.
【判断题】For a random signal X(t), when t equals to t1, X(t1) can be regarded as a fixed value.
A.
正确
B.
错误
【单选题】They asked the teacher _______.
A.
when will they have the exam
B.
when they would have the exam
C.
when they have the exam
D.
when would they have the exam
【简答题】国际货物运输方式很多,_______是其中最主要的运输方式。
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