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【简答题】
半径 r = 1.0 m 的飞轮,受力矩作用得到一角加速度位 α = - 5.0 rad·s -2 , t = 0 时刻飞轮的角速度 ω 0 = 5.0 rad·s -1 。当 t = 1.0 s 时飞轮边缘上点的线速度 v = m·s -1 。
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举一反三
【简答题】Some children learn to budget their pocket money very well and even have ____(save) at the end of the month.
【简答题】蛤蚧的功效是
【简答题】请用“肯定视角”思考“物价上涨”、“大病一场”现象; 请用“否定视角”思考“路不拾遗”、“工作稳定”现象; 并为每一现象绘制一张思维导图。
【单选题】Some children learn to speak and read and write when they are very young compared _____ children.
A.
with normal
B.
to average
C.
with usual
D.
to usual
【简答题】Fill in the blanks with the words or expressions given. Change the form if necessary. rural widespread dramatic gain trend response promote po...
【单选题】Exercise 7 Choose the best answers in the blanks . 2. Some children learn ________ slower ________. It would be unfair to expect a child with learning difficulties to keep up with faste...
A.
at a rate
B.
rate
【单选题】蛤蚧的功效是
A.
补肺气，助肾阳，定喘咳
B.
补肺气，助肾阳，益精血
C.
补肺气，定喘嗽，益精血
D.
助肾阳，定喘嗽，益精血
E.
补肺气，助肾阳，定喘嗽，益精血
【单选题】Some children learn _____ slower ___________. It would be unfair to expect a child with learning difficulties to keep up with faster learners.
A.
a great deal of
B.
for the purpose of
C.
at a....rate
D.
go down
【单选题】Some children learn to play the guitar because their parents ______.
A.
play too
B.
think it's easy
C.
force them
D.
think it's useful
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