滤线栅摄影中照片上密度出现一边高一边低,原因可能是()
A.滤线栅反置
B.侧向倾斜
C.上栅焦距偏离
D.双重偏离
E.下栅焦距偏离
参考答案:D
Mr. Gates didn’t think the result of the new deployment of American soldiers will come out soon.
当介质含尘量超标时,()将不能正常工作。