拉伸工艺需在拉伸前注入内膜油,内膜油量过少会产生()。
A.无影响
B.芯头烧损
C.断管
D.难以吹扫形成内壁氧化
参考答案:B, C
So far all cloned animals have suffered from some different serious disorders, _______ dying soon after birth.
A.many of which
B.many of whom
C.many of them
D.many of that
下列哪项不是根据《储蓄管理条例》银行办理储蓄业务必须遵循原则()
A.存款自愿
B.取款自由
C.存款有息
D.以客户为中心