巨幼细胞贫血时,红细胞直方图的变化为
A.右移,基底部不变B.右移,基底部加宽C.左移,基底部加宽D.右移,基底部变窄E.右移,出现双峰
参考答案:B
—_____ my glasses?
—Yes, I saw them on your desk a minute ago.
A.Do you see
B.Have you seen
C.Had you seen
D.Would you see
Swing的顶层容器有:JApplet,JWindow,JDialog和______。