如果要求保存的数据在断电关机后,下一次开机后能保持不变,可以选用的存储器有:()
A.动态RAM
B.静态RAM
C.EPROM
D.FLASH
参考答案:C, D
男,84岁,缺失,下面叙述正确的是()。
A.上颌为KennedyⅡ类Ⅰ亚类牙列缺损
B.上颌为KennedyⅡ类Ⅱ亚类牙列缺损
C.上颌为KennedyⅠ类Ⅰ亚类牙列缺损
D.下颌为KennedyⅠ类Ⅰ亚类牙列缺损
E.下颌为KennedyⅣ类牙列缺损
I saw she was in difficulty with all those parcels, so I offered my()
A.services
B.money
C.use
D.chance