消防员灭火防护表面抗湿性能:沾水等级不小于()级。
A.2.0
B.3.0
C.1.0
D.4.0
参考答案:B
--______ is your house from the factory? --It’s about twenty minutes’ walk.
A.How long
B.How soon
C.How often
D.How far
第三期梅毒的病变不包括()
A.梅毒疹
B.梅毒树胶样肿
C.马鞍鼻
D.脊髓痨
E.麻痹性痴呆