诊断计算机的故障，通常可以分为芯片级诊断和______诊断两种。
A．快速
B．软件
C．硬件
D．板卡级
参考答案：D
The hotel wasn't particularly good, but I _______ in many worse hotels. [ ]
A. stayed
B. would stay
C. was staying
D. had stayed
下述动脉导管未闭的X线表现，错误的是()
A．肺动脉段突出
B．漏斗征
C．主动脉结缩小
D．主动脉结增大
E．肺门影增大
