问题
单项选择题 A1/A2型题
与胶片将X线强度差异转换为光学密度的因素无关的是（）
A.荧光体特性
B.胶片特性
C.显影加工条件
D.观片灯亮度
E.X线对比度
答案
参考答案：D
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与胶片将X线强度差异转换为光学密度的因素无关的是（）
A.荧光体特性
B.胶片特性
C.显影加工条件
D.观片灯亮度
E.X线对比度
参考答案：D
Driving to a store after a busy day at work, I saw a man standing near the store holding a sign that said, “Will work for food.” I knew at that  moment that I was going into the store and 36 him something to eat.As I 37 the car park, I saw in my car mirror a lady come out from a hairdresser’s and 38 the man. I thought she must be going to give him some 39 or something to help him out. In the store I was 40 to get the  things I needed and also the chicken dinner and a soda that I wanted to give the man outside. I hurried out to my car and 41 that I was going to be able to hopefully help this man.When I drove out of the car park, I couldn’t see the 42 . As I turned the corn  er I saw the man sitting in a 43 area away from the hairdresser’s and still 44 up the sign. I immediately 45 over and gave the man the dinner and soda and said, “ 46 this will get you through today.” He looked at me and said, “Thank yo u so much!”As I got back into my car, I looked in the 47 and saw the man swallowing the dinner like he hadn’t eaten for days. I was so 48 that I was able to help him and at the same time I was so sad t hat the woman from the hairdresser’s, 49 , had asked the man 50 from her shop. It’s sad to say that 51 I live in a small city where homeless is not as 52 as in larger cities, people are uncomfortable with these people in 53 . All they need to do is lend a helping hand 54 and it could make a huge 55 in their lives
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