驾驶货车在山区道路行驶存在的危险因素有() ["山区弯道多,易因超速造成碰撞、坠崖","路面狭窄,行车操作难度大","重车下坡时易因制动效能衰退发生事故","山区气候寒冷,驾驶员反应能力下降"]
简答优势胜利的条款?
石化行业夏季“四防”的内容是()。 ["A、防汛、防雷电、防火、防爆","B、防暑降温、防汛、防雷电、防倒塌","C、防暑降温、防汛、防雷电、防火","D、防暑降温、防汛、防雷电、防中毒"]
40#钢的含碳量为()。 ["40%","4%","0.4%","0.04%"]
简答技术犯规和侵人犯规的条款?
散打比赛中有哪些情况可以暂停比赛?