【单选题】防止电器火灾的发生主要防护措施是合理选用电器装置,在易燃易爆的危险环境中,必须采用( )装置。
【单选题】I don't think we can solve the problem this way. We should try a different ___________.
【简答题】I think we can solve this problem without _______ to legal actions. 诉诸法律手段
【单选题】I think that’s the only way we can think of ______ the math problem.
【单选题】I don’t think we can solve the problem this way. We should try a different _____.
【判断题】为了加工和安装的方便,有些铸件毛坯需铸出工艺搭子,但零件加工完毕以后,工艺搭子必须切除。()
【单选题】I think we can solve this problem without _____________________ legal action.
【判断题】在液压驱动系统中,换向阀、节流阀属于执行装置。
【单选题】在易燃易爆的危险环境中,必须采用 ( ) 。