制动轮温度过高，制动瓦块冒烟主要是由于安装调整不当而引起的。（）
A、正确
B、错误
参考答案：A
为保护______、______等鸟类及其生存环境而建立青岛湖鸟岛保护区．
用恰当的介词填空。
1. There is a big library ______ the left.
2. Please sit ______ me. I want to talk with you.
3. Welcome ______ our shop again.
4. Look! Jack is standing ______ Tom and Jim.
5. The Science Museum is ______ front of the post office.
