在删除表中的列时，使用UNUSED进行标记的作用是（ ） A: 对系统来说，被标记为UNUSED的列就是被删除了 B: 对系统来说，被标记为UNUSED的列依然存在，并占用存储空间 C: 对用户来说，被标记为UNUSED的列就像是被删除了，无法进行查询 D: 使用UNUSED标记的作用和直接使用DROP是一样的
在删除表中的列时，使用UNUSED进行标记的作用是（ ） A: 对系统来说，被标记为UNUSED的列就是被删除了 B: 对系统来说，被标记为UNUSED的列依然存在，并占用存储空间 C: 对用户来说，被标记为UNUSED的列就像是被删除了，无法进行查询 D: 使用UNUSED标记的作用和直接使用DROP是一样的
46.In the viewpoint of David Leibling, many garages are unused for vehicles in that ________ .
46.In the viewpoint of David Leibling, many garages are unused for vehicles in that ________ .
How much unused RMB does Mr. Brown have?
How much unused RMB does Mr. Brown have?
我儿子不习惯吃辣的食物。(be unused to)
我儿子不习惯吃辣的食物。(be unused to)
Understanding news reports A: They bought the bride a used wedding dress. B: They entertained the guests with unused food. C: They asked a local charity to collect unused food. D: They sent digital wedding invitations to the guests.
Understanding news reports A: They bought the bride a used wedding dress. B: They entertained the guests with unused food. C: They asked a local charity to collect unused food. D: They sent digital wedding invitations to the guests.
When the device is temporarily unused or the device is abnormal, the processing method is to delete the device.
When the device is temporarily unused or the device is abnormal, the processing method is to delete the device.
How much unused RMB does Mr. Brown have? He has _____________ yuan.
How much unused RMB does Mr. Brown have? He has _____________ yuan.
Why can’t Mr. Brown take the unused RMB back to his home country? Because _________________________.
Why can’t Mr. Brown take the unused RMB back to his home country? Because _________________________.
The townspeople of Haverford are A: observant and kindly. B: unused to weather extremes. C: introverted and sullen. D: gossipy and mean-spirited.
The townspeople of Haverford are A: observant and kindly. B: unused to weather extremes. C: introverted and sullen. D: gossipy and mean-spirited.
Listen to the statement and complete the following sentences with NO MORE THAN TWO WORDS. Unused laser printing units are __________ when students graduate.
Listen to the statement and complete the following sentences with NO MORE THAN TWO WORDS. Unused laser printing units are __________ when students graduate.