翻斗车行驶的坡道应平整且宽度不得小于()米
A.1.5
B.2
C.2.3
D.2.5
参考答案:C
(111)x=273,基数X为多少?
用于皮肤消毒的氯己定液浓度为
A.0.1%
B.0.3%
C.0.4%
D.0.5%
E.1%