乙型肝炎病毒属于DNA病毒科,其直径为()。
A.22mm
B.25mm
C.45mm
D.42mm
E.100mm
参考答案:A, D
Electronic mail, or mail, as it is known to its many fans, has been around for over two decades. Typically, email systems support five basic functions, as described below. (41) refers to the process of creating messages and answers. (42) refers to moving messages from the originator to the recipient. (43) has to do with telling the originator what happened to the message. Was it rejected Was it lost (44) incoming message is needed. So people can read their email. (45) is the final step and concerns what the recipient does with the message after receiving it.
A.Composition
B.Transfer
C.Reporting
D.Displaying
假定退休前的投资收益率为6%,10万元的启动资金到高先生65岁时增长为( )。
A.51.12万元
B.54.18万元
C.57.34万元
D.59.20万元