安装刮板输送机刮板链时，有时可以适当增大刮板距。
参考答案：错
What surprised me most was _________ to meet his girlfriend again.
A．not his allowing
B．his not being allowed
C．his being not allowed
D．his having not been allowed
开发者社区能满足开发者哪些需求？（）
A.创业致富
B.学习交流
C.获取信息
