简答题气门弹簧简答题机构（英语）简答题有效率的; （直接）生效的; 能干的;[ɪˈfɪʃənt]简答题进气歧管 两个单词多选题下面哪个词的意思不是“同时地”？ A. Simultaneously B. at the same time C. by the way D. meanwhile E. in the meantime简答题最佳的，最优的; 最理想的; [ˈɔptɪməl] adj简答题气门杆简答题螺栓（写英文）简答题exhaust manifold简答题上止点（3个词，小写）多选题下面哪个不是润滑油经过的零部件？ A. oil pan B. oil pump C. camshaft bearing D. cylinder head cover简答题push rod简答题water pump中文（两个字）简答题功能，作用; 应变量，函数; 职务; 重大聚会; [ˈfʌŋkʃən]简答题歧管简答题散热器（一个单词，8个字母）简答题fuel tank 翻译。答案两个字判断题下面哪些个词的意思是配气机构？ A. Valve Train B. valve mechanism C. valve gear D. timing gear判断题下面有关ECU的表述正确的是 A. The ECU determines precisely how much fuel needs to be delivered by the injector by monitoring the engine sensors. B. The ECU turns the injectors on for a precise amount of time, referred to as injection pulse width or injection duration, to deliver the proper air-fuel ratio to the engine. C. Its components are: engine sensors, electronic control unit, fuel injector assemblies and related wiring. D. The basic function of the ECU is to control the pulse width of the injector.判断题Engine crankshaft and connecting rod assembly is composed of A. piston B. piston rings C. connecting rods D. valves E. crankshaft