与小胶质细胞有关的病理变化有:()
A.噬神经细胞现象
B.卫星现象
C.胶质结节
D.泡沫细胞
E.杆状细胞
参考答案:A, C, D, E
Mrs.Smith finds it hard to clear up the mess,as her children are always ________ whenever she tries to. (2013·福建,29)
A.in the way
B.on watch
C.in sight
D.on the line
操纵飞机水平转弯时受力()
A.升力、重力、拉力、阻力、惯性力
B.转弯向心力由发动机拉力提供
C.转弯向心力由升力提供