脱硫吸收塔内的浆液和烟气中携带的二氧化硫反应后生成了化学性质非常稳定的硫酸钙,因此,吸收塔中不需要防腐。()
参考答案:错
PEG比浊法测定非抗原特异性循环免疫复合物时,其敏感度可达()
A.5mg/LHANHG
B.10mg/LHAHG
C.15mg/LHAHG
D.20mg/LHAHG
E.25mg/LHAHG
Kate with her parents often __________ to a movie on weekends.
A.go
B.goes
C.going
D.to go