问题
单项选择题
下面（）制版法中得到的网穴的特点是用网点大小来表现不同的阶调和层次的。
A、照相凹版
B、照相加网凹版
C、电子雕刻凹版
D、电子束雕刻凹版
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
下面（）制版法中得到的网穴的特点是用网点大小来表现不同的阶调和层次的。
A、照相凹版
B、照相加网凹版
C、电子雕刻凹版
D、电子束雕刻凹版
参考答案：B
| 用方框内所给单词的适当形式填空。 | |
2. The man jumped down to safety ____. 3. Here is a photograph of our village. Our village is in a ____. 4. She ____ down to tie her shoe laces. 5. He said that he ____ English to maths. 6. They were ____ to face up to the difficulties. 7. After ____ he went abroad for further education. 8. The water is ____. Would you turn off the stove? 9. The river ____ into the sea. 10. Has he made the exam ____? |