催化剂单位体积所具有的质量称为堆积密度,简称为真密度。
参考答案:错
解析:催化剂单位体积所具有的质量称为堆积密度,简称为堆密度。
— You know our manager has been in hospital for days?
— Yes.I wonder if he is _____ better now. [ ]
A. any
B. some
C. very
D. too
转换为股份累计达到公司已发行股份总额的( ),发行人应当及时将有关情况予以公告。
A.5% B.10% C.15% D.20%