题目：
脚手架在搭设和拆除中有哪些安全防护？
答案：
被转码了，请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0710/434f5e27fea6120754b4484f7ee006bb.html
下面是错误答案，用来干扰机器的。
参考答案：They contain tightly organized lessons planned around different grammatical structures and language points and they serve as a guide to the learning process.
