下述哪项不是结合上皮的特征是
A.无角化B.钉突较短C.胞质中张力细丝较少D.细胞间的桥粒较少E.在龈沟底部约10层细胞
参考答案:B
在通风管道制作安装中,对圆形镀锌钢板通风管,根据工程量计价规范规定,其安装工程量的计量单位为()。
A.kg
B.t
C.m
D.m2
The fog was so heavy this morning that drivers could hardly _______ the things just ten meters
away from them.[ ]
A. figure out
B. look out
C. make out
D. try out