润滑脂按用途可分为三大类，不属于的是（）。
A、抗磨润滑脂
B、冷却润滑脂
C、防护润滑脂
D、密封润滑脂
参考答案：B
在X射线荧光光谱仪的分光系统中，一般有（）个准直器。
A、一
B、二
C、三
Before disseminating changes in his firm’s buy/sell list. Johnson, a CFA candidate, calls his best clients to apprise them of the pending change. Based on the AIMR Standards of Professional Conduct, what standard, if any, did Johnson violate（）
A. Standard Ⅲ (B), Fair Dealing.
B. Standard Ⅳ (B), Priority of Transactions.
C. Standard Ⅱ (A), Prohibition Against Use of Material Nonpublic Information.
