使用200DPI 分辨率扫描一幅2×2.5 英寸的黑白图像,可以得到一幅( ) 像素的图像。
A.200×2
B.2×2.5
C.400×500
D.800×1000
参考答案:C
He ______ a book about his adventures in Tibet. I hope he can find a good publisher when it is finished.
A.was writing
B.wrote
C.has already written
D.is currently writing
可以从哪些方面辨别对方是否吸食了新型毒品()
A.未患感冒或过敏症,但是经常流鼻涕或流鼻血
B.嘴的周围长口疮或丘疹
C.手臂、大腿内侧、腋下等身体部位有针孔
D.手指或嘴唇有烧灼的痕迹