快速客车踏面圆周磨耗深度的运用限度都是不大于()。
参考答案:7mm
疥疮好发部位是()
A.躯干部位
B.四肢部位
C.皮肤皱褶及薄嫩部位
D.头颈部位
E.手足部位
54. It's very cold outside. You should put on more clothing to ______, otherwise you will catch bad cold.
A.keep it out
B.make it out
C.keep out it
D.keep off it