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58问答库 > 一辆汽车在沪杭高速公路上行驶，车上的速度表指针始终在如图甲所示的位置，汽车从路牌A行驶到路牌B，则（

一辆汽车在沪杭高速公路上行驶，车上的速度表指针始终在如图甲所示的位置，汽车从路牌A行驶到路牌B，则（

2025-03-16 04:55:18

推荐回答（1个）

回答（1）：

A、路牌A到路牌B的路程：S=120km-48km=72km；故A错误；
B、该汽车的行驶速度是100km/h，故B错误；
CD、∵v=

s

t

∴汽车从路牌A行驶到路牌B所需要时间：t=

s

v

=

72km

100km/h

=0.72h=43.2min=2592s．故C正确，D错误．
故选C．

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