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【单选题】
关于平均速度、瞬时速度、速度、速率描述正确的是:A.
平均速度就是速度
B.
平均速度等于瞬时速度
C.
瞬时速度就是速度
D.
瞬时速度就是速率
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反馈参考答案：
举一反三
【单选题】What does barrier refer to in Paragraph 4?
A.
Support.
B.
Acceptance.
C.
Resistance.
D.
Bondag
【单选题】If you _______ in taking this attitude， we‘ll have to ask you to leave。
A.
insist
B.
resist
C.
persist
D.
exist
【单选题】Overweight as she is, she can’t______being tempted to eat food full of sugar and fat
A.
forbid
B.
resist
C.
reject
D.
allow
【单选题】以下数组定义语句中,错误的是( )。
A.
Static arr1(10） As Integer
B.
Dim arr2(3,1 To 4)
C.
Dim arr3(-10)
D.
Dim arr4(0 To 5,1 To 3) As Integer
【单选题】It's said that plants __________ with a virus give off a gas that stimulates disease resistance in neighboring plants.
A.
interacted
B.
inflicted
C.
infected
D.
induced
【单选题】According to structural engineers in California, what is important for an earthquake-resistant building?
A.
Rigid frames so that buildings do not move in earthquakes.
B.
Concrete frames.
C.
Buildings designed to move and sway.
D.
One-story buildings.
【单选题】She crossed the enemy lines, disguised as a civilian, to bring medical ______ to the Resistance fighters.
A.
surrey
B.
surcharge
C.
summation
D.
succor
【单选题】What does barrier refer to in Paragraph 4?
A.
Support.
B.
Acceptance.
C.
Resistance.
D.
Bondage.
【单选题】执行下面程序段后,数组元素 arr(4) 的值为( )。 Dim arr(1 To 10) As Integer Dim i% For i=1 To 10 If i<=2 Then Arr(i)=1 Else Arr(i)=arr(i-1)+arr(i-2) End If Next i
A.
1
B.
4
C.
3
D.
2
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