• 2022-06-06 问题

    x,y,z是三个正整数,已知3x=4y=7z,那么x+y+z的最小值是多少() A: 33 B: 40 C: 49 D: 61 E: 84

    x,y,z是三个正整数,已知3x=4y=7z,那么x+y+z的最小值是多少() A: 33 B: 40 C: 49 D: 61 E: 84

  • 2022-06-07 问题

    已知A、B两点的坐标分别为A(300.000m,400.000m)、B(500.000m,500.000m),则直线AB的坐标方位角αAB=()。 A: 26°33′54″ B: -26°33′54″ C: 61°20′04″ D: -61°20′04″

    已知A、B两点的坐标分别为A(300.000m,400.000m)、B(500.000m,500.000m),则直线AB的坐标方位角αAB=()。 A: 26°33′54″ B: -26°33′54″ C: 61°20′04″ D: -61°20′04″

  • 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。()

  • 2022-06-06 问题

    函数[img=61x33]17e0b28a0d137c3.jpg[/img]的反函数为( ) 未知类型:{'options': ['', ' [img=72x17]17e0b28a22910ad.jpg[/img]', ' [img=61x33]17e0b28a2ca4793.jpg[/img]', ' [img=61x33]17e0b28a37558e3.jpg[/img]'], 'type': 102}

    函数[img=61x33]17e0b28a0d137c3.jpg[/img]的反函数为( ) 未知类型:{'options': ['', ' [img=72x17]17e0b28a22910ad.jpg[/img]', ' [img=61x33]17e0b28a2ca4793.jpg[/img]', ' [img=61x33]17e0b28a37558e3.jpg[/img]'], 'type': 102}

  • 2022-06-30 问题

    函数[img=61x33]17e442d6423feff.jpg[/img]的反函数为( ) 未知类型:{'options': ['', ' [img=72x17]17e442d655fbe0d.jpg[/img]', ' [img=61x33]17e442d65f86eda.jpg[/img]', ' [img=61x33]17e442d669418ae.jpg[/img]'], 'type': 102}

    函数[img=61x33]17e442d6423feff.jpg[/img]的反函数为( ) 未知类型:{'options': ['', ' [img=72x17]17e442d655fbe0d.jpg[/img]', ' [img=61x33]17e442d65f86eda.jpg[/img]', ' [img=61x33]17e442d669418ae.jpg[/img]'], 'type': 102}

  • 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]…

  • 2022-06-12 问题

    下列的排序中哪一组是堆 A: 29 94 48 33 61 10 22 13 B: 67 44 66 16 37 11 20 33 C: 99 66 45 33 37 10 22 13 D: 87 62 22 33 35 13 46 10

    下列的排序中哪一组是堆 A: 29 94 48 33 61 10 22 13 B: 67 44 66 16 37 11 20 33 C: 99 66 45 33 37 10 22 13 D: 87 62 22 33 35 13 46 10

  • 2022-06-07 问题

    x<-2-2<x<-1-1<x<33<x<4x>4x+2-++++x+1--+++x-3---++x-4----+(x+2)(x+1)(x-3)(x-4)+-

    x<-2-2<x<-1-1<x<33<x<4x>4x+2-++++x+1--+++x-3---++x-4----+(x+2)(x+1)(x-3)(x-4)+-

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