防护用品按防护部份分类的基础是人体劳动卫生学。
参考答案：对
All her time _______ experiments, she has no time for films.
A. devoted to do B. devoted to doing
C. devoting to doing
感染性休克应用低分子右旋糖酐的作用是()
A．防止血细胞凝集和血栓形成
B．疏通微循环
C．提高血浆渗透压
D．防止发生DIC
E．降低血液粘稠度
