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【判断题】
做圆周运动的物体一定具有加速度。A.
正确
B.
错误
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反馈参考答案：
举一反三
【多选题】What will happen in Grain Rain?
A.
People eat toona sinensis.
B.
People will have a Grain Rain Festival.
C.
People will drink tea.
D.
Sandstorms may occur.
【单选题】They have produced they did last year.
A.
twice more grain as
B.
twice as much grain as
C.
twice as many grain as
D.
as twice many grain as
【简答题】在高频功率放大器中多用______作负载，其主要作用是______。
【简答题】A．gain B．gang C．giant D．grain
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