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【简答题】

在平坦的垒球运动场上,击球手挥动球棒将垒球水平击出,垒球飞行一段时间后落地.若不计空气阻力,则(  )

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【单选题】In October 1961 at Crowley Field in Cincinnati Ohio an old deaf gentleman named William E. Hoy stood up to throw the first ball of the World Series. Most people at Crowley Field on that day probably d...

A.
Hoy was one of the greatest baseball players in his time.
B.
Speaking and listening are not necessary in baseball games.
C.
The judge had to study the hand signals very seriously.
D.
Hoy’s family encouraged him to become a baseball player.

【单选题】韦利是个和斯坦一样强的棒球击球手,斯坦是个比大多数人都要强的棒球击球手。以下正确的是()

A.
韦利应是这些选手中最出色的
B.
斯坦应是这些选手中最出色的
C.
韦利是个比大多数人都要强的棒球击球手
D.
以上都不对

【单选题】空气阻力与车速()

A.
等值
B.
成反比
C.
平方成正比
D.
不成比例