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问题 单项选择题 A1/A2型题

滤线栅的叙述，正确的是（）

A.铅条高度与其间隔之比为栅比

B.栅密度的单位是线／平方厘米

C.TS越大，吸收散射线能力越强

D.选择能越小，吸收散射线能力越好

E.对比度改善系数K值越小越好

答案

参考答案：A

单项选择题

硫胺素含量丰富的食物是（）

A．动物肝脏、鱼肝油、禽蛋 

B．谷类、豆类和干果类 

C．新鲜的蔬菜、水果 

D．海带、紫菜 

E．动物肝脏、动物血
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填空题

用所给词的适当形式填空

1. Next you need ______ everything into a blender.(put)

2. Please p______ the apple for the babies before they eat them.

3. Put some relish on two ______ (slice)of turkey.

4. Jenny, would you like to make a fruit s______ for me?

5. I like eating Beijing D______ very much.It's very delicious.

6. Here _______(be) some story-books for you and your brothers.

7. _______(not add) _______(some) honey to the sandwich.

8. How much ______(relish) do we need?
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