卫星现象是指哪种细胞围绕神经元形成的()
A.星形胶质细胞
B.少突胶质细胞
C.巨噬细胞
D.小胶质细胞
E.室管膜细胞
参考答案:B
--- Who are you waiting for?
--- ______ us a lecture this afternoon.
A. The professor wants to give
B. The professor will give.
C. The professor about to give
D. The professor to give.
省、自治区、直辖市人民政府应当在接到发生或可能发生重大职业中毒事件的报告后何时向国务院卫生行政部门报告()
A.1小时内
B.2小时内
C.3小时内
D.4小时内
E.立即