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  • 2021-04-14 问题

    Quiz 1 Please match the correct words with the right Chinese meanings.

    Quiz 1 Please match the correct words with the right Chinese meanings.

  • 2021-04-14 问题

    求图中电压U()1(),U()2A.()U()1()=10V,U()2()=5V()B.()U()1()=-10V,U()2()=-5V()C.()U()1()=10V,U()2()=-5V()D.()U()1()=5V,U()2()=-10V

    求图中电压U()1(),U()2A.()U()1()=10V,U()2()=5V()B.()U()1()=-10V,U()2()=-5V()C.()U()1()=10V,U()2()=-5V()D.()U()1()=5V,U()2()=-10V

  • 2022-06-06 问题

    Unit 3 Vocabulary Task 1 Match the meanings with the words.

    Unit 3 Vocabulary Task 1 Match the meanings with the words.

  • 2022-06-07 问题

    Quiz Unit2 综合 Find appropriate verbs (1—8) in the text which fit the items (A—H).

    Quiz Unit2 综合 Find appropriate verbs (1—8) in the text which fit the items (A—H).

  • 2022-06-15 问题

    Part V Writing （1）__________________

    Part V Writing （1）__________________

  • 2021-04-14 问题

    Writing Task 1 is less important than Writing Task 2.

    Writing Task 1 is less important than Writing Task 2.

  • 2022-06-04 问题

    标准的正态分布应满足（ ） A: u＝0 σ＝0 B: u＝0 σ＝1 C: u＝1 σ＝1 D: u＝1 σ＝0

    标准的正态分布应满足（ ） A: u＝0 σ＝0 B: u＝0 σ＝1 C: u＝1 σ＝1 D: u＝1 σ＝0

  • 2021-04-14 问题

    【单选题】图所示的电路,若参考方向分别如 U 1 , U 2 所示,则 U 1 , U 2 分别为 ()。 A. U 1 =1V, U 2 =1V B. U 1 =1V, U 2 =-1V C. U 1 =-1V, U 2 =1V D. U 1 =-1V, U 2 =-1V

    【单选题】图所示的电路,若参考方向分别如 U 1 , U 2 所示,则 U 1 , U 2 分别为 ()。 A. U 1 =1V, U 2 =1V B. U 1 =1V, U 2 =-1V C. U 1 =-1V, U 2 =1V D. U 1 =-1V, U 2 =-1V

  • 2022-06-05 问题

    U3L1 Vocabulary(副本) Match the words (1–9) to the pictures (a–i).

    U3L1 Vocabulary(副本) Match the words (1–9) to the pictures (a–i).

  • 2022-07-26 问题

    已知u(1)=1，u"(1)=2，v(1)=1，v"(1)=-1，若函数y=u(x)v(x)，则y"(1)等于______。 A: -1 B: 1 C: -2 D: 2

    已知u(1)=1，u"(1)=2，v(1)=1，v"(1)=-1，若函数y=u(x)v(x)，则y"(1)等于______。 A: -1 B: 1 C: -2 D: 2

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