下列不属于肉芽组织的功能的是()
A.抗感染
B.保护创面
C.填补伤口
D.机化凝血块
E.伤口收缩
参考答案:E
One reason for Mary's preference for this senior high school is _____ she can have access to outstanding
teachers and plentiful learning resources. [ ]
A. why
B. how
C. what
D. that
《铁路无线通信维护暂行规则》规定,山区岩石地区接地电阻()。
A、≤10Ω
B、≤20Ω
C、≤30Ω
D、≤40Ω