下列关于磺化工艺操作的说法错误的是( )。
A、控制投料速度C
暂无解析
Thehousewasquietinthenight,________theoccasionalcoughingfrommythroat.
Johnhardlyspeakstoanybodyintheclass,________________?
Itisnotdecided________theconferencewillbeheld.
WithanappropriaterelativepronounMybrotherspeaksEnglishfluently,________Idon’t.
Thedelegation________RussiawillvisitLondonthisafternoon.
