支座安装应确保支座预埋钢板保持平整,平整度不得大于()
参考答案:2mm
Pass me the glasses please. I can _____ read the words in the newspaper. [ ]
A. hardly
B. really
C. clearly
与Ⅰ型角蛋白的特点不符的是()
A.等电点为酸性
B.分子量为40~56.5kD
C.包括K10~K20
D.等电点为中性一碱性
E.常与Ⅱ型角蛋白配对表达