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【单选题】
执行命令 chmod  o+ rw file后,file文件的权限变化为 (  )
A.
同组用户可读写file文件
B.
所有用户都可读写fle文件
C.
其他用户可读写file文件
D.
文件所有者可读写file文件
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
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举一反三
【单选题】德鲁克认为七种创新来源中,与其他类型的创新相比()创新具有最漫长的前置期
A.
技术性
B.
产品性
C.
流程性
D.
知识性
查看完整题目与答案
【单选题】According to the text, which of the following is true?
A.
Scientists can tell the motion of the earth from the motions of five other planets.
B.
A fixed star refers to a star that is always stationary on the sky.
C.
Ancient people had scant knowledge about the movement of the stars.
D.
All the stars on the sky can be seen all year long.
查看完整题目与答案
【单选题】Which of the following is true about the motion of the moon?
A.
The moon and the sun are moving in the same place.
B.
The moon revolved along the ecliptic.
C.
The moon moves faster than the sun.
D.
The position of the moon can be found changed in an hour’s time.
查看完整题目与答案
【单选题】Your radar is set on a true motion display．Which of the following will NOT appear to move across the PPI scope ________．
A.
Echoes from a buoy
B.
Own ship's marker
C.
Echo from a ship on the same course at the same speed
D.
Echo from a ship on a reciprocal course at the same speed
查看完整题目与答案
【单选题】When the machines run the planet, for what purpose do they use the humans?
A.
Manual labor
B.
Energy
C.
Experiments
D.
Karaoke
查看完整题目与答案
【判断题】尺寸界线必须由轮廓线引出
A.
正确
B.
错误
查看完整题目与答案
【单选题】When the machines run the planet in the film The Matrix, for what purpose do they use the humans?
A.
Manual labor
B.
Energy
C.
Experiments
D.
Karaoke
查看完整题目与答案
【单选题】true motion
A.
相对矢量
B.
相对运动
C.
绝对运动
D.
绝对矢量
查看完整题目与答案
【单选题】What are students required to do before they use the new app?
A.
They should have a LinkedIn profile.
B.
They should swipe their credit cards.
C.
They should have a personal statement.
D.
They should upload a video of their biography.
查看完整题目与答案
【单选题】3关于尺寸界线的画法,错误的是
A.
A用细实线绘制
B.
B由图形的轮廓线,轴线或对称中心线处引出,也可以直接利用这些线作为尺寸界线
C.
C尺寸界线一般应与尺寸线垂直
D.
D在光滑过渡处标注尺寸时,必须用粗实线将轮廓线延长,从他们的交点处引出尺寸界线
查看完整题目与答案
相关题目：
【单选题】德鲁克认为七种创新来源中,与其他类型的创新相比()创新具有最漫长的前置期
A.
技术性
B.
产品性
C.
流程性
D.
知识性
查看完整题目与答案
【单选题】According to the text, which of the following is true?
A.
Scientists can tell the motion of the earth from the motions of five other planets.
B.
A fixed star refers to a star that is always stationary on the sky.
C.
Ancient people had scant knowledge about the movement of the stars.
D.
All the stars on the sky can be seen all year long.
查看完整题目与答案
【单选题】Which of the following is true about the motion of the moon?
A.
The moon and the sun are moving in the same place.
B.
The moon revolved along the ecliptic.
C.
The moon moves faster than the sun.
D.
The position of the moon can be found changed in an hour’s time.
查看完整题目与答案
【单选题】Your radar is set on a true motion display．Which of the following will NOT appear to move across the PPI scope ________．
A.
Echoes from a buoy
B.
Own ship's marker
C.
Echo from a ship on the same course at the same speed
D.
Echo from a ship on a reciprocal course at the same speed
查看完整题目与答案
【单选题】When the machines run the planet, for what purpose do they use the humans?
A.
Manual labor
B.
Energy
C.
Experiments
D.
Karaoke
查看完整题目与答案
【判断题】尺寸界线必须由轮廓线引出
A.
正确
B.
错误
查看完整题目与答案
【单选题】When the machines run the planet in the film The Matrix, for what purpose do they use the humans?
A.
Manual labor
B.
Energy
C.
Experiments
D.
Karaoke
查看完整题目与答案
【单选题】true motion
A.
相对矢量
B.
相对运动
C.
绝对运动
D.
绝对矢量
查看完整题目与答案
【单选题】What are students required to do before they use the new app?
A.
They should have a LinkedIn profile.
B.
They should swipe their credit cards.
C.
They should have a personal statement.
D.
They should upload a video of their biography.
查看完整题目与答案
【单选题】3关于尺寸界线的画法,错误的是
A.
A用细实线绘制
B.
B由图形的轮廓线,轴线或对称中心线处引出,也可以直接利用这些线作为尺寸界线
C.
C尺寸界线一般应与尺寸线垂直
D.
D在光滑过渡处标注尺寸时,必须用粗实线将轮廓线延长,从他们的交点处引出尺寸界线
查看完整题目与答案