属于有包膜的DNA病毒,主要侵犯B细胞引起传染性单核细胞增多症等()
A.甲型肝炎病毒
B.乙型肝炎病毒
C.EB病毒
D.噬菌体
E.丁型肝炎病毒
参考答案:C
We were going to go out,but watching TV at home because of rain.
A.took up
B.came out
C.set out
D.ended up
当来料凸度增大时,要维持板形良好的状态,压下量也应相应加大。