问题
单项选择题
放大摄影X线管焦点为0．05，允许的最大放大率为（）
A.3倍
B.4倍
C.5倍
D.6倍
E.7倍
答案
参考答案：C
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放大摄影X线管焦点为0．05，允许的最大放大率为（）
A.3倍
B.4倍
C.5倍
D.6倍
E.7倍
参考答案：C
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| One Friday morning, Bill 1 up late. He gets 2 the classroom. Mr Gar, his maths teacher says, "You are late again. Now how many times are you late this week?" "Three times." says Bill. "Why are you late again? Why don't you get up 3 ?" "It isn't my fault, Mr Gao. The TV play is over 4 eleven." answers Bill. "Now 5 me look 6 your homework," says the teacher. "I'm sorry, I can't do it," says Bill. " 7 can't you do it?" asks the teacher. "Because the first part of the homework is 8 easy. I don't think I 9 to do it. The second part is too difficult 10 me to do it. I can't work it out. So I don't do it." answers Bill. | |||
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