Ag（DDC）法需用有机碱吸收反应中的（）

A.砷化氢

B.吡啶溶液

C.二乙基二硫代氨基甲酸

D.三乙胺-氯仿

E.砷溶液

For a vessel inclined by the wind, multiplying the buoyant force by the horizontal distance between the lines of action of the buoyant and gravity forces gives the（）.

A.righting moment

B.vertical moment

C.longitudinal moment

D.transverse moment