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【多选题】
如图所示的三叶指尖陀螺是一个由三向对称体作为主体,在主体中嵌入轴承,整体构成可平面转动的玩具装置.其中O为转轴中心,A、B分别是指尖陀螺上不同位置的两点,用v代表线速度大小,ω代表角速度大小,a代表向心加速度大小,T代表周期,则下列说法中正确的是( )A.
v A =v B ,T A =T B
B.
ω A =ω B ,v A >v B
C.
v A >v B ,a A B
D.
T A =T B ,a A >a B
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举一反三
【单选题】Among the following numbers, which one is seen as a yang number in the classic I-Ching?
A.
2
B.
4
C.
5
D.
6
【多选题】Listen to the passage again and decide which of the following numbers are mentioned in the passage.
A.
-10℃
B.
2.38
C.
400
D.
300,000
E.
12
F.
80%
【简答题】Numbers 4.mp3 Listen to and write down the following numbers in groups.(Audio File Numbers 4)
【简答题】Probably related to _____1____...em...but probably more, I think, to do with those things _____2_____. Just to choose one example, it would be flight back from the US which was delayed, and delayed, a...
【单选题】In which one of the following numbers are all of the zeros significant?
A.
100.09009
B.
0.14329
C.
0.05843
D.
0.1
E.
0.003002
【简答题】上颌动脉的末段为翼腭段,分支主要有 ________ 动脉、 ________ 动脉、腭降动脉及蝶腭动脉。
【多选题】Which of the following numbers are pronunced differently in radio communication from those in daily English?
A.
3
B.
4
C.
5
D.
9
【单选题】Each of the following numbers has two digits blotted out. Which of the numbers could be the number of hours in x days, where x is an integer?
A.
25■,■06
B.
50■,■26
C.
56■,■02
D.
62■,■50
E.
65■,■20
【多选题】Listen to the passage again and decide which of the following numbers are mentioned in the passage.
A.
1/4
B.
3/4
C.
1/2
D.
34,795
E.
Room 101
F.
1.36
G.
2,000,000
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