血清氯化物正常参考值是
A.92~108mmol/L
B.98~106mmol/L
C.88~110mmol/L
D.90~105mmol/L
E.86~106mmol/L
参考答案:B
The old woman is too feeble to cross the street without her nephew's help.
A.tired
B.weak
C.timid
D.blind
()是某些生物在其生命活动过程中产生的,在低微浓度时既能选择性的抑制其它生物功能的化学物质
A.抗生素
B.疫苗
C.抗菌素
D.止痛药