单项选择题 冲压机是危险性较大的设备，从劳动安全卫生角度看，冲压加工过程的危险有害因素来自机电、噪声、振动等方面。下列冲压机的危险有害因素中有噪声伤害、振动伤害、机械伤害及电机伤害，危险性最大的是机器伤害。（）

单项选择题 下列哪个句子最符合科技英语写作规范？ A、 The company promises future improvements in tasks like networking, but, applications are still a sore point. B、The company promises future improvements in tasks like networking, but applications are still a sore point. C、The company promises future improvements in tasks like networking. But applications are still a sore point.

单项选择题 公司目前采用的风险评价方法是LEC半定量方法。（）