• 2022-06-28 问题

    常用钢丝绳一般为6 X 19、6 X 37、6 X 61三种。()

    常用钢丝绳一般为6 X 19、6 X 37、6 X 61三种。()

  • 2022-06-29 问题

    独立重复地投掷一颗均匀的骰子,直到出现6点就停止投掷,设X表示投掷骰子的次数,则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da13460ecf5.png[/img][img=36x43]1803da134eadb99.png[/img][img=57x43]1803da135709664.png[/img]…[img=58x43]1803da135e5a076.png[/img]… D: X123…k…P[img=9x43]1803da13671cd55.png[/img][img=36x43]1803da13703c21c.png[/img][img=57x43]1803da1378489ec.png[/img]…[img=58x43]1803da13822269c.png[/img]…

    独立重复地投掷一颗均匀的骰子,直到出现6点就停止投掷,设X表示投掷骰子的次数,则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da13460ecf5.png[/img][img=36x43]1803da134eadb99.png[/img][img=57x43]1803da135709664.png[/img]…[img=58x43]1803da135e5a076.png[/img]… D: X123…k…P[img=9x43]1803da13671cd55.png[/img][img=36x43]1803da13703c21c.png[/img][img=57x43]1803da1378489ec.png[/img]…[img=58x43]1803da13822269c.png[/img]…

  • 2022-06-29 问题

    独立重复地投掷一颗均匀的骰子,直到出现6点就停止投掷,设X表示投掷骰子的次数,则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803573572a7b80.png[/img][img=36x43]180357357af3976.png[/img][img=57x43]180357358399321.png[/img]…[img=58x43]180357358bf0f84.png[/img]… D: X123…k…P[img=9x43]180357359488348.png[/img][img=36x43]180357359c7d68a.png[/img][img=57x43]18035735a57969a.png[/img]…[img=58x43]18035735ae0e3f4.png[/img]…

    独立重复地投掷一颗均匀的骰子,直到出现6点就停止投掷,设X表示投掷骰子的次数,则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803573572a7b80.png[/img][img=36x43]180357357af3976.png[/img][img=57x43]180357358399321.png[/img]…[img=58x43]180357358bf0f84.png[/img]… D: X123…k…P[img=9x43]180357359488348.png[/img][img=36x43]180357359c7d68a.png[/img][img=57x43]18035735a57969a.png[/img]…[img=58x43]18035735ae0e3f4.png[/img]…

  • 2022-06-29 问题

    独立重复地投掷一颗均匀的骰子,直到出现6点就停止投掷,设X表示投掷骰子的次数,则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da175d21bb3.png[/img][img=36x43]1803da176510759.png[/img][img=57x43]1803da176e34ee6.png[/img]…[img=58x43]1803da177747ce7.png[/img]… D: X123…k…P[img=9x43]1803da177fbaa74.png[/img][img=36x43]1803da17890c39f.png[/img][img=57x43]1803da1792a9c56.png[/img]…[img=58x43]1803da179bd7a28.png[/img]…

    独立重复地投掷一颗均匀的骰子,直到出现6点就停止投掷,设X表示投掷骰子的次数,则X的分布列是______________. A: X123456P1/61/61/61/61/61/6 B: X123456…P1/61/61/61/61/61/6… C: X123…k…P[img=9x43]1803da175d21bb3.png[/img][img=36x43]1803da176510759.png[/img][img=57x43]1803da176e34ee6.png[/img]…[img=58x43]1803da177747ce7.png[/img]… D: X123…k…P[img=9x43]1803da177fbaa74.png[/img][img=36x43]1803da17890c39f.png[/img][img=57x43]1803da1792a9c56.png[/img]…[img=58x43]1803da179bd7a28.png[/img]…

  • 2022-06-07 问题

    6.2´104 Pa A: 6.2´104 Pa B: 6.2´104 Pa C: 6.2´104 Pa D: 6.2´104 Pa

    6.2´104 Pa A: 6.2´104 Pa B: 6.2´104 Pa C: 6.2´104 Pa D: 6.2´104 Pa

  • 2022-06-29 问题

    在Python中,正确的赋值语句为 A: x+y=26 B: 2y=x+10 C: x=3y D: x=y=61

    在Python中,正确的赋值语句为 A: x+y=26 B: 2y=x+10 C: x=3y D: x=y=61

  • 2022-07-02 问题

    电除尘器适用于粉尘比电阻范围是( )Ω· ㎝ 。 A: 104~109 B: 104~1010 C: 104~1011 D: 104~1012

    电除尘器适用于粉尘比电阻范围是( )Ω· ㎝ 。 A: 104~109 B: 104~1010 C: 104~1011 D: 104~1012

  • 2022-06-11 问题

    设函数y = y(x)由参数方程[img=104x61]1803d3461eb81d9.png[/img]确定,则[img=105x56]1803d346275301b.png[/img] A: -2 B: -1 C: [img=52x43]1803d3462eb551c.png[/img] D: [img=36x43]1803d3463748b21.png[/img]

    设函数y = y(x)由参数方程[img=104x61]1803d3461eb81d9.png[/img]确定,则[img=105x56]1803d346275301b.png[/img] A: -2 B: -1 C: [img=52x43]1803d3462eb551c.png[/img] D: [img=36x43]1803d3463748b21.png[/img]

  • 2022-06-09 问题

    设函数y = y(x)由参数方程[img=104x61]1803d3431500e23.png[/img]确定,则[img=53x46]1803d3431d68e7b.png[/img]=( ) A: -2 B: -1 C: [img=52x43]1803d34325be995.png[/img] D: [img=36x43]1803d3432d989a1.png[/img]

    设函数y = y(x)由参数方程[img=104x61]1803d3431500e23.png[/img]确定,则[img=53x46]1803d3431d68e7b.png[/img]=( ) A: -2 B: -1 C: [img=52x43]1803d34325be995.png[/img] D: [img=36x43]1803d3432d989a1.png[/img]

  • 2022-06-27 问题

    蛋壳表面约有细菌()。 A: 50×104~100×104个 B: 100×104~200×104个 C: 300×104~350×104个 D: 400×104~500×104个

    蛋壳表面约有细菌()。 A: 50×104~100×104个 B: 100×104~200×104个 C: 300×104~350×104个 D: 400×104~500×104个

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