Tom was born ______ June 3rd, 1997. [ ]
A. in
B. of
C. on
D. at
答案:C
下列药物中,不需做过敏试验的是()。
A.普鲁卡因
B.链霉素
C.破伤风抗毒素
D.利多卡因
E.细胞色素C
风机盘管机组安装方式有()、()