SCSI协议采用分层结构，其中包括（）。
A.互联层
B.传输层
C.应用层
D.会话层
参考答案：A, B, C
The father as well as his three children ________ skating on the frozen river every Sunday afternoon
in winter. [ ]
A. is going
B. go
C. goes
D. are going
下列哪一种溶液不是等渗溶液（）
A.生理盐水
B.乳酸钠林格液
C.5%葡萄糖溶液
D.5%碳酸氢钠溶液
E.冰冻血浆
his three children ________ skating on the frozen river every Sunday afternoon