单项选择题 （ ） is the second phase of the ovarian cycle in which a mature egg is released from the ovarian follicles into the oviduct.A.MenstruationB.BleedingC.OvulationD.menopause

多项选择题 Which of the following is part of Mintzberg's Goldeneye organization?( ) A. Technostructure B. Strategic Apex C. The company regulations D. Support Staff

单项选择题 当以5 mol H2气与4 mol Cl2气混合，最后生成2 mol HCl气。若以下式为基本单元，则反应进度ξ应是： H2(g) + Cl2(g)=2HCl(g)  A. 1 mol B. 2 mol   C. 4 mol D. 5 mol