下列说法错误的是( )
A.化合反应一定是氧化还原反应
B.分解反应可能是氧化还原反应
C.置换反应一定是氧化还原反应
D.复分解反应一定不是氧化还原反应
答案:A
一段导体两端的电压为8V时,通过导体的电流为0.8A,当通过导体的电流增加0.2A时( )
A.导体两端的电压增加0.2V
B.导体两端的电压保持不变
C.导体的电阻减小2Ω
D.导体的电阻仍为10Ω
Billy, CFA, tells a prospective client that the earnings of K&K Limited will be $10.05 per share next fiscal year. Billy violated:()
A. Standard Ⅴ(A) Prohibition against Use of Material Nonpublic Information.
B. Standard Ⅳ(B) Distinguish between facts and opinions.
C. Standard Ⅳ(A) Avoid any material misrepresentations.