53. In the store of a car dealer, less than 10 cars are equiped with fog light, and 40% of the cars have **window, Is the dealer has more car with fog light than those with **window? (1) 80%的车有雾灯但是没有windows T (2)52 cars have fog light or window or both
是不是选D啊,我觉得都可以。
31。三个轮子,上面两个下面一个,用一个convey把这三个轮子围住,counter clockwise转,半径分别是左上中轮4inches,右上大轮6inches, 下面小轮2inches. 中轮和大轮有刻度,0123,均匀排列,就是 0在轮子上,开始时中轮和大轮的数字都指向0,小轮转3/2(题里写的1又1/2,我不会打)圈,问上面两个轮子此时的指针的数字加起来是多少?
JJ朋友解释:顺时针的话,12点位置就变成了1和2,和就是3;逆时针就是2+3=5。好象反了吧,应该是 顺时针的话12点位置就变成了2+3。逆时针就变成了1和2,啊。 想来想去都应该是这样啊。
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