840.部分区域有每百万分之一的一氧化碳含量,更复杂的探测器提供一个数字输出用来点亮一个灯或报出警告音。

96.Head aircraft into the wind( )

95.若要改变这个修理程序,则要得到设计主管部门的批准 ( )

94.Those units provide a means of preventing it from freezing ( )

93.SET THE SWITCH TO THREE CYCLES A MINUTE ( )

92.The primary function of the hydraulic pressure system is to supply pressure flying controls for the operation of flying controls( )

91.Calculate the pressure with the applicable formula ( )

90.The intermediate pressure check valve [IPCV] prevents air in the HP/IP manifold from going into the fourth stage bleed air source( )

89.Remove and install the condenser/reheater with the water collector as an assembly This balances the condenser/reheater weight on the hoist adapter( )

88.Blind rivet is a special rivet used in a sheet metal structure that can be installed when there is access to only one side of the metal( )

87.飞机接地。( )