• 2021-04-14 问题

    设X~N(m,σ2),则Y=aX+b~N(am+b,(as)2).

    设X~N(m,σ2),则Y=aX+b~N(am+b,(as)2).

  • 2022-06-05 问题

    It ____I who _____leaving for London. A: is…is B: am…is C: is…am D: am…am

    It ____I who _____leaving for London. A: is…is B: am…is C: is…am D: am…am

  • 2022-06-06 问题

    I_____helpful.He_____helpful,too. A: is,am B: am,is C: am,are

    I_____helpful.He_____helpful,too. A: is,am B: am,is C: am,are

  • 2022-06-08 问题

    -_________ you Miss Smith?-Yes,I _________. A: Are;are B: Am;am C: Are;am D: Is;am

    -_________ you Miss Smith?-Yes,I _________. A: Are;are B: Am;am C: Are;am D: Is;am

  • 2022-06-19 问题

    当溶液中有两种辅助配位剂L 和A同时对金属离子M产生副反应,这时金属离子M的总副反应系数为 A: aM= aM(L )+ aM(A) B: aM= aM(L ) + aM(A)- 1; C: aM=aM(L )+aM(A)+ 1 D: aM=aM(L )-aM(A)

    当溶液中有两种辅助配位剂L 和A同时对金属离子M产生副反应,这时金属离子M的总副反应系数为 A: aM= aM(L )+ aM(A) B: aM= aM(L ) + aM(A)- 1; C: aM=aM(L )+aM(A)+ 1 D: aM=aM(L )-aM(A)

  • 2021-04-14 问题

    【单选题】) — ____ you Miss Smith? — Yes, I ____ . A. Are; are B. Am; am C. Are; am D. Is; am A. Are are B. Am am C. Are am D. Is am

    【单选题】) — ____ you Miss Smith? — Yes, I ____ . A. Are; are B. Am; am C. Are; am D. Is; am A. Are are B. Am am C. Are am D. Is am

  • 2021-04-14 问题

    I tired but I hungry.: am ; am not|am; am|are; are not|is; is not

    I tired but I hungry.: am ; am not|am; am|are; are not|is; is not

  • 2022-05-27 问题

    Was ist falsch(错误的)? A: am Morgen B: am Nacht C: am Abend D: am Vormittag

    Was ist falsch(错误的)? A: am Morgen B: am Nacht C: am Abend D: am Vormittag

  • 2022-06-07 问题

    I______apupil.You_______ateacher. A: am,is B: am,are C: is,are

    I______apupil.You_______ateacher. A: am,is B: am,are C: is,are

  • 2022-05-29 问题

    I a boy. Are you a boy? No, I not. A: am, are B: are, is C: am, am

    I a boy. Are you a boy? No, I not. A: am, are B: are, is C: am, am

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