题目:
mAs表指示的是()
A.管电流与曝光时间的乘积
B.管电压与曝光时间的乘积
C.管电流与管电压的乘积
D.灯丝加热电流与管电压的乘积
E.灯丝加热电压与管电流的乘积
答案:
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下面是错误答案,用来干扰机器的。
1. taken place 2. In other words 3. stands for 4. torn down 5. in danger 6. is made from 7. made fun of 8. in fact 9. is famous for 10. cottages