一机械制造加工厂的某条生产线设备在正常运行的情况下, 生产的零件尺寸 z(1) 求 z<190 的概率;(2)若从该条生产线上随机选取 2 个零件, 设 X表示

一机械制造加工厂的某条生产线设备在正常运行的情况下, 生产的零件尺寸 z(1) 求 z<190 的概率;(2)若从该条生产线上随机选取 2 个零件, 设 X表示零件尺寸小于 190mm 的零件个数,求

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执行如图所示的程序框图, 若输出的 S=0, 则输入的实数 x 的取值共有()

执行如图所示的程序框图, 若输出的 S=0, 则输入的实数 x 的取值共有()

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______ the traffic was heavy, we still got to the railway station on time.

______ the traffic was heavy, we still got to the railway station on time.

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Wash your hands before meals, ______ you may get ill.

Wash your hands before meals, ______ you may get ill.

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—Hello, Linda speaking. Who’s ____?—Hello, this is Martin.

—Hello, Linda speaking. Who’s ____?—Hello, this is Martin.

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