牵引绳拉断碰人事故原因分析?
参考答案:
钢丝绳断丝多,未及时更换,在装载或用牵引绳移设装载机时折断,钢丝绳甩出碰人;上、下山移设耙装机时,钢丝绳拉断,装载机易下滑碰人。
In Switzerland, six miles west of Geneva,___________ a collection of laboratory buildings.
A.lie
B.are lying
C.lies
D.lays
叙述并指出胞肓、髀关、天髎的定位。