混凝土电杆基础采用卡盘时，应满足哪些规定？
参考答案：
①安装前应将下部土壤分层回填夯实；
②安装位置、方向、深度应符合设计要求。
阅读理解，正确的写“T”，错误的写“F”。
I have nine markers (标志). They are red, yellow, blue, orange, purple, green, black, brown, pink. My
favourite (最喜欢的) colour is orange. Where's my red marker? It's in my pencil-case.
( ) 1. I have ten markers.
( ) 2. Orange is my favourite colour.
( ) 3. I have a white marker.
( ) 4. Red marker is in my pencil-case.
生态平衡。
