IgM占血清总Ig的
A.3%~5%B.5%~10%C.10%~15%D.15%~20%E.30%~50%
参考答案:B
Windows 98采用了虚拟存储技术以扩展可用的内存。在下列文件中,由Windows 98创建和管理的、用于扩展内存的交换文件是
A.Win 386.swp
B.Buffe sys
C.Hiberfi sys
D.Confisys
—David, how old is your father this year?
—______. And we just had a special party for his _____ birthday last weekend.
A.Fortieth; forty
B.Forty; forty
C.Forty; fortieth
D.Fortieth; fortieth