以实际产量表示的盈亏平衡点中BEPQ值越大,说明该项目承受生产规模变动风险的能力()
A、越小
B、越大
C、中等
D、不受影响
参考答案:A
Words _________ me when I wanted to express my thanks to him. I just held his hands
firmly, choking.
A.left
B.encouraged
C.reminded
D.failed
突触后膜对下列哪种离子通透性增加产生抑制性突触后电位
A.Na+、Cl-、K+,尤其是K+
B.Ca2+、K+、Cl-,尤其是Ca2+
C.Na+、K+,尤其是Na+
D.K+、Cl-,尤其是Cl-
E.K+、Ca2+、Na+,尤其是Ca2+