碘解磷定治疗有机磷酸酯类中毒的作用机制是（）。 A.能阻断M胆碱受体的作用 B.能阻

下列说法正确的是

A．按系统命名法，化合物的名称是2，3，5，5-四甲基-4，4-二乙基己烷

B．等物质的量的苯和苯甲酸完全燃烧消耗氧气的量不相等

C．苯与甲苯互为同系物，均能使KMnO₄酸性溶液褪色

D．CH₃CH(NH₂)CH₂COOH 3-氨基丁酸

主要用于片剂黏合剂的是

A．淀粉
B．糖粉
C．药用碳酸钙
D．山梨醇
E．糊精

Are the following statements about trade debt and customer advances true or false Statement 1: Trade debt is reported in the balance sheet at the present value of the future expected cash flows discounted at the firm’ s weighted-average cost of capital. Statement 2: For analytical purposes, customer advances should be viewed as a prediction of future revenues rather than as an expected cash outflow.Statement 1Statement 2 ①A. False True ②B. False False ③C. True True

A．

B．

C．

在证券交易活动中，涉及公司的经营、财务或对该公司的市场价格有重大影响的信息称为内幕信息。 ( )