创伤后包扎的目的是()
A.保护伤口
B.减少污染
C.固定敷料
D.帮助止血
E.以上全是
参考答案:E
解析:A、B、C、D均为包扎的目的。
—Where is our English teacher?
—She is in the classroom, _____ the exercises _________ the students have done at home.
A.explaining; /
B.explaining; for
C.explained; to
D.explained; from
只有()个卷筒的卷扬机,成为单卷筒卷扬机。
A、1
B、2
C、3
D、4