A.您好; B.請; C.謝謝、對不起; D.再見; E.下車關好門;
A.飲食習慣; B.技術水平; C.專業(yè)知識; D.駕駛經(jīng)驗;
A.清潔; B.潤滑; C.緊固; D.補給;