412、When you do maintenance on the waste water system, do not touch your face with your gloves、
在维修废水系统时,切勿用手套触摸面部、
答案解析
相关题目
863、 Comments are located directly below the repair/modification section, extending from the left to the
right margins.
注释位于修复/修改部分的正下方,从左到右空白延伸。
862、Close valve "A" when you get the same indications on gauges “X” AND”Y” 当压力表“X”和“Y”的指示相
同时,关闭阀门“A
861、 CALTION、WHEN YOU REMOVE THE PROBES, DO NOT LET THEM TOUCH EACH OTHER.
860、 Carefully put the valve assembly in its position and install the spacers and the bolts.
859、 CAP usually consist of two pages、 one text page and one illustration page.
858、calculate the quantity of fuel necessary for the flight. 计算飞行所需的燃料数量
857、Calculate the pressure with the applicable formula
856、Braking system is used to decrease run-down time or stop propeller rotation during engine power-off
conditions.
855、Bleed the system before you disconnect the components
584、 Because airplanes are intended to have long lives, their flight safety must be assured.
因为飞机是要有很长的寿命,所以必须保证飞行安全
