当接触器触头过度磨损,将会使()不合格。
A.初压力
B.终压力
C.超行程
D.开距
参考答案:C
These pictures are not his. They're _____. I drew them by myself just now. [ ]
A. my
B. mine
C. yours
输血不是作为主要传播途径的病毒性疾病是()
A.乙型肝炎
B.丙型肝炎
C.丁型肝炎
D.艾滋病
E.戊型肝炎