在使用链激酶或尿激酶溶栓治疗时，可选用下列哪项指标监护（）
A.STGT
B.PCT
C.TT
D.vWF：Ag测定
E.RVVT
参考答案：C
Sally _____ her MP4 for 3 years. [ ]
A. have bought
B. has bought
C. have had
D. has had
不属于Applet显示相关的方法的是( )。
A．paint()
B．update()
C．repaint()
D．show()
