鸟嘴型骨折是指跟骨骨折中（）。
A.跟骨结节纵形骨折
B.跟骨结节横形骨折
C.载距突骨折
D.跟骨前端骨折
E.以上都不是
参考答案：B
下列各种中断中，哪些是强迫性中断 Ⅰ．硬件故障中断 Ⅱ．访管中断 Ⅲ．输入输出中断 Ⅳ．缺页中断 Ⅴ．地址越界中断
A．Ⅰ、Ⅱ、Ⅳ和Ⅴ
B．Ⅰ、Ⅲ、Ⅳ和Ⅴ
C．Ⅰ、Ⅱ、Ⅲ和Ⅳ
D．都是
What did I do in Washington().
A.I worked in a drugstore.
B.I worked in a copy room.
C.I did research about my family.
D.I worked in a library.
