受难乐（Oratorio Psaaion）——产生于十七世纪四十年代的德国，基本歌词

采用随机对照试验评价某中西医结合治疗糖尿病的效果，试验组糖尿病某种并发症的发生率为18％，对照组发生率为39％，症状性低血糖发生率试验组为46％，对照组35％，则

RRR为（）。

A.21％

B.11％

C.54％

D.24％

E.4.8

有关系S(S#，SNAME，SEＸ)，C(C#，CNAMＥ)，SC(S#，C#)。其中S#为学生号， SNAME为学生姓名，SEX为性别，C#为课程号，CNAME为课程名。要查询选修“计算机”课的全体女学生姓名的SQL语句是"SELECT SNAME FROM S，C，SCWHERE"子句。这里WHERE子句的内容是

A．S#＝SＣ.S# AND SEX＝‘女’AND CNAME＝‘计算机’

B．S#＝SＣ.S# AND Ｃ.C#＝SC# AND CNAME＝‘计算机’

C．SEX＝‘女’AND CNAME＝‘计算机’

D．S#=SＣ.S# AND Ｃ.C#＝SC# AND SEX＝‘女’AND CNAME＝'计算机’

For periods beginning on or after l January 2011, the Global Investment Performance Standards () require that total firm assets be defined as the aggregate fair value of all:（）

A. discretionary assets in fee-paying portfolios managed by the firm.

B. discretionary and non-discretionary assets in fee-paying portfolios managed by the firm.

C. discretionary and non-discretionary assets in fee-paying and non-fee-paying portfolios managed by the firm.

带接地闸刀的开关，在开、合过程中主闸刀、接地闸刀的瞬时空气间隙不得小于（）。

A、300mm

B、350mm

C、400mm

D、500mm