【单选题】The connecting rod is attached to the piston by the _______
【单选题】目前主要通过接种减毒活疫苗可预防下列哪种疾病:
【判断题】以葡萄糖为底物的酒精发醇,其终产物乙醇分子上的碳原子来源都是相同的。
【多选题】Piston and connecting rod contains .
【单选题】_____ is fully floating in both connecting rod small end and the piston skirt.