题目内容
（请给出正确答案）
[主观题]
According to the customs of this port，the work of opening and closing hatch covers is done
by ______.
A.the ship's officers
B.the foreman from the shore
C.the ship's hands
D.the tally man
如搜索结果不匹配，请 联系老师 获取答案
考虑S2-的水解，计算下列硫化物在水中的溶解度：CuS，MnS。
