在天平的两个托盘上各放一个烧杯，杯中盛有等质量等质量分数的稀硫酸，此时天平平衡。如果一边放少许锌粒，另一边放入相同质量的铁，两者完全溶解后，天平指针 [ ]

A.偏向有锌的一边

B.偏向有铁的一边

C.不偏转

D.无法判断

合营企业设董事会。( )

A. An equity joint venture shall have a directors' conference.
B. Companies which do business together shall have a board of directors.
C. Companies which do business together shall have a directors' conference.
D. An equity joint venture shall have a board of directors.