扩张性心肌病()
A.心界增大伴颈静脉怒张
B.双室增大伴心衰
C.杵状指
D.抗链球菌溶血素"O"滴定度升高
E.脉压差增大
参考答案:B
She is_____new comer to____chemistry but she has already made some important discoveries.
A.the; the
B.the;/
C.a;/
D.a; the
蓄电池在运行中极板硫化有什么特征?