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【单选题】
一质点作匀速圆周运动时,则 ( )
A.
切向加速度改变,法向加速度改变
B.
切向加速度改变,法向加速度不变
C.
切向加速度不变,法向加速度改变
D.
切向加速度不变,法向加速度不变
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参考答案:
举一反三
【简答题】口算。 5×5+5= 0×8+6= 3×9+6= 3×8+3= 9×6+0= 4×7+2= 2×7+6= 4×9+6= 5×8+4= 5×9+5= 6+8×8= 3×7+6=
【单选题】与外国相比,我国平均油耗要高( )。
A.
10%~25%
B.
10%~20%
C.
10%~15%
D.
15%~25%
【单选题】What was the place like where Cather grew up?
A.
It was cold, plain and without a church.
B.
It was a colorful world of wild flowers.
C.
It was like a German Christmas card.
D.
It was vast, open, flat and wild.
【简答题】6=()10=______:______=______÷25=______%0.6= () 10 =______:______=______÷25=______%
【单选题】教育要把握儿童学习的“关键期”,体现了个体身心发展的( )特点。
A.
连续性
B.
阶段性
C.
顺序性
D.
不均衡性
【简答题】A.It was cold. B.It was a failure. C.I'm very happy. D.She is shy enough.
【单选题】"It was cold yesterday." "()it was."
A.
Nor
B.
Neither
C.
So
D.
Such
【简答题】A. It was a failure. B. Lucy is too shy. C. I drank a lot. D. It was cold.
【简答题】______:10=0.2=______÷25=______%
【单选题】下列那组选项使下列陈述完整并且正确? 与_____属性节点不同,_____属性节点要求 输入_____才能正常工作。
A.
显式
B.
隐式
C.
数值引用
D.
隐式
E.
显式
F.
数值引用
G.
显式
H.
隐式
I.
控件引用
J.
隐式
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