NA表示阿伏加德罗常数。则下列叙述中，正确的是 A．32g S2-中电子数目为2

女，35岁。慢性胆囊炎病史。饱食后突起持续性上腹部剧痛，痛引两胁，恶心，呕吐，口干苦。检查：体温38℃，脉搏103次／分，血压110／70mmHg，腹部稍膨胀，剑突下有轻压痛及反跳痛。舌淡红，苔白，脉弦细。血淀粉酶600U/L（苏氏法）。

若考虑患者出现重症胰腺炎，最具有诊断价值的实验室指标是（）

A.血清脂肪酶增高

B.血清淀粉酶增高

C.血钙降低

D.血胆红素增高

E.影像检查胰腺增大

女性30岁，已经生育，平时月经规律，经量中等。妇科检查：子宫后位、正常大小，左侧输卵管增粗、轻压痛，要求避孕，下列哪种方法适宜（）

A.安全期避孕

B.短效口服避孕药

C.IUD

D.紧急避孕

E.皮下埋植剂

何谓软下疳?试述其治疗方法。

在发电机的发电过程中，能量的转化是由（）

A.机械能转化为电能

B.热能转化为电能

C.化学能转化为电能

D.电能转化为机械能

As CFA members, when they dealing with the investment service for his or her clients and employer, which of the following statements is most accurate according to the Standards of Professional Conduct relating to loyalty, prudence and care（）

A. CFA members must place their clients' and employers' interests before their own clients' interests.

B. CFA members must place their employers' interests before their own interests.

C. CFA members must place their clients' interests before their employers' or their own interests.