机械制图中,物体的可见轮廓和不可见轮廓线分别用()表示。
A.粗实线和虚线
B.细实线和虚线
C.粗实线和细实线
D.粗实线和点画线
参考答案:A
根据下列句子中的汉语写出所缺单词的正确形式,每空一词。
1. She has a lot of ____ (经验) in teaching English.
2. The National Games was held ____ (成功地) in Shandong.
3. I'd like to help ____ (无家可归的) people.
4. You should ____ (集中) more on your lesson at school.
5. What would you do if you had one ____ (百万) dollars.
6. Xiao fang did well in the ____ (期终) exam.
7. My father has just got his driving ____ (执照).
8. Her ____ (发音) is better than any one else in our class.
9. He seemed to ____ (意识到) his mistakes.
10. Worrying about our problems can ____ (影响) how we do at school.
依据《中华人民共和国城乡规划法》城乡規划确定的( )等用地,禁止擅自改变用途。
A.自然保护区
B.水库、水源地
C.防汛通道、消防通道
D.污水处理厂和公共服务设施
E.输配电设施及输电线路走廊