下列叙述正确的是( )A．梅毒螺旋体属于疏螺旋体B．梅毒螺旋体也称苍白密螺旋体C．

Arthur Harrow, CFA, is a pharmaceuticals analyst at Dominion Asset Management. His supervisor directs him to prepare separate research reports on Miracle Drug Company and Wonder Drug Company. Harrow’s former college roommate and close friend is the president of Miracle. Harrow owns 2000 shares of Wonder, which currently sells for $ 25 a share. Harrow’s supervisor is unaware of these facts. According to CFA Institute Standards of Professional Conduct, which of the following action, if any, is Harrow required to take if he writes the research reports（）

A. Harrow must disclose to Dominion both his relationship with the president of Miracle and his ownership of shares in Wonder.

B. Harrow must disclose to Dominion his relationship with the president of Miracle but not his ownership of shares in Wonder.

C. Harrow must disclose to Dominion his ownership of shares in Wonder but not his relationship with the president of Miracle.

为了解健康促进规划的进展情况，发现存在的问题并及时改进而进行的评价是（）

A.形成评价

B.过程评价

C.效应评价

D.总结评价

E.结局评价

架空线路敷设与建筑物的水平间距应( )；架空线路敷设与建筑物没有门窗的墙水平间距应( )。

A．大于等于1m，大于等于1.5m
B．大于等于1.5m，大于等于1m
C．大于等于1.5m，大于等于2m
D．大于等于2m，大于等于1m

设计双筋梁时，当求A_s、A'_s时，补充条件是( )

A．取A_s=A'_s
B．取ξ=ξ_b
C．取x=2α'_s
D．取x＞2α'_s

Access中的表间关系有______、______和______三种。