题干
- What's her job?
- ___________.（ ）
A：He's a cook
B：She's my mother
C：She's a cook
答案(点此获取答案解析）
C
- What's her job?
- ___________.（ ）
A：He's a cook
B：She's my mother
C：She's a cook
2PbSO4；+2H2O电解苦卤水(含C1一、Br一、Na+、Mg2+)的装置如图所示(a、b为石墨电极)。