问题
单项选择题
使用K型扫查阵列式探头探测焊缝，增加发收晶片数量主要是为了提高（）。
A、探伤灵敏度
B、扫查密度
C、定位精度
D、定量精度
答案
参考答案：B
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使用K型扫查阵列式探头探测焊缝，增加发收晶片数量主要是为了提高（）。
A、探伤灵敏度
B、扫查密度
C、定位精度
D、定量精度
参考答案：B
| 阅读理解。 | ||||
| Birthdays are celebrated all over the world. Some ways to celebrate birthdays are rather similar from country to country: candles, cakes and birthday wishes. But there also different ways to celebrate birthdays. Here are a few:
| ||||
| 1. When someone is having a birthday in Denmark, you can see _____ outside the window. | ||||
| A. flowers B. presents C. a flag D. a chair | ||||
| 2. In _____ flowers are put on the chair of the birthday child. | ||||
| A. Japan B. Denmark C. India D. Holland | ||||
| 3. In _____, only birthday children wear colored clothes to school. | ||||
| A. India B. Holland C. Denmark D. Japan | ||||
| 4. In Japan, the birthday is more important for boys when they are _____. | ||||
| A. 15 B. 7 C. 5 D. 3 | ||||
| 5. The passage is mainly about _____. | ||||
| A. similar ways of celebrating birthdays in some countries B. different ways of celebrating birthdays in some countries C. children's birthdays in western countries D. the importance of children's birthdays |