骨性关节炎的最早期关节症状为()
A．肿胀
B．发红变热
C．活动受限
D．疼痛
E．松弛
参考答案：D
The thief trapped in the house _____ from the window but the fear of falling to his death scared him not to do so.
A．managed to escape
B．tried to run
C．attempted to escape
D．tried escaping
翻车机摘钩平台升起前的安全工作是什么？
