Physics Unit25: Optical Instruments (id: efc444fc9)

本题目来源于试卷: Physics Unit25: Optical Instruments，类别为 国际高中通用物理

[单选题]
The length of time the shutter i+*ax3vjb b 8y5 b6mrvvs open and the film is exposed in a c++ng z/q:syk ramera is de:n ygk+qsrz/ +termined by the

A. shutter speed.
B. f-stop.
C. focusing.
D. none of the given answers


参考答案:  A


本题详细解析: 暂无

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