蓄电池在充电时，电解液的比重增高。
参考答案：对
---- Would you like to go for a picnic with us ? .
----- __________ . But I am too busy .
A．No , I can' t.
B．I ' d like.
C． Yes , I ' d love to .
D．Why not
荨麻疹
A．急性溶血反应B．迟发性溶血反应C．非溶血性发热反应D．过敏反应E．输血相关性疾病
