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【多选题】
下列关于Excel2010的“排序”功能说法正确的有( )A.
可以按行排序
B.
可以按列排序
C.
可以自定义排序
D.
最多允许有三个排序关键字
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反馈参考答案：
举一反三
【单选题】An object hanging from a spring (弹簧) will oscillate (震动) up and down. You perform an experiment on a particular mass-spring system, and observe that it oscillates once every 3 seconds. Which of the fo...
A.
0.01 s
B.
0.05 s
C.
0.1 s
D.
1 s
【单选题】An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of a sphere is 9.83 g. If the volume of this sphere is less than __________ cm3 , then the sph...
A.
0.723
B.
1.38
C.
134
D.
7.48
E.
none of the above
【单选题】An object of mass 0.50 kg, hanging from a spring with a spring constant of 8.0 N/m, is set into a simple harmonic motion. What is the maximum speed of the object if its maximum displacement is 0.10 m?
A.
0.20m/s
B.
0.40m/s
C.
0.80m/s
D.
1.60m/s
【单选题】A constant force of 20 N is applied to an object of mass 8.0 kg at an angle of 25° with the horizontal. What is the work done by this force on the object if it causes a displacement of 2.0 m along the...
A.
40 J
B.
0 J
C.
36 J
D.
19 J
【简答题】____ punishment is not a good way to educate children. So no school is allowed to do that.(Mental, Physical)
【单选题】He is _______ scolding his child , which is not a good way to educate him.
A.
often
B.
usually
C.
always
D.
frequently
【简答题】They have a good _______( educate).
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