根据现行《火灾自动报警系统设计规范》,探测区域应按独立房(套)间划分。一个探测区域的面积不宜超过()
A.600㎡
B.500㎡
C.800㎡
D.1000㎡
参考答案:B
植物油和章丹用于制备()
A.眼膏剂
B.涂膜剂
C.巴布剂
D.黑膏药
E.橡胶膏剂
句型转换我能行!
1. She often walks to school. (改为过去时)
_______________________________________________________
2. I send these postcards to Canada. (改为现在进行时)
3. I like it. (一般疑问句)
4. I played cards. (改为一般现在时)
5. How old are you? (根据实际情况回答)