内容发布更新时间 : 2024/6/16 2:01:22星期一 下面是文章的全部内容请认真阅读。
正确答案：C
(108)Which procedure increases holding time when deicing/anti-icing an airplane using a two-step process?
?
A．Heated Type 1 fluid followed by cold Type 2 fluid.
? ?
B．Cold Type 2 fluid followed by hot Type 2 fluid. C．Heated Type 1 or 2 fluid followed by cold Type 1 fluid.
正确答案：A
(109)Which of the following will decrease the holding time during anti-icing using a two-step process?
? ? ?
A．Apply heated Type 2 fluid. B．Decrease the water content.
C．Increase the viscosity of Type 1 fluid.
正确答案：A
(110)Which is a disadvantage of the one-step over the two-step process when deicing/anti-icing an airplane?
? ? ?
A．It is more complicated. B．The holding time is increased.
C．More fluid is used with the one-step method when large deposits of ice and snow must be flushed off airplane surfaces.
正确答案：C
(111)Snow on top of deicing or anti-icing fluids
?
A．need not be considered as adhering to the aircraft.
? ?
B．must be considered as adhering to the aircraft. C．must be considered as adhering to the aircraft, but a safe takeoff can be made as it will blow off.
正确答案：B
112)Freezing Point Depressant (FPD) fluids used for deicing
? ?
A．provide ice protection during flight. B．are intended to provide ice protection on the ground only.
?
C．on the ground, cause no performance degradation during takeoff.
正确答案：B
(113)Anti-icing fluid should provide freezing point protection to
? ? ?
A．-20°F ambient temperature.
B．+32°F outside temperature or below.
C．a freezing point no greater than 20°F below the ambient or airplane surface temperature.
正确答案：C
(114)The purpose of dilating ethylene glycol deicing fluid with water in non-precipitation condition is to
? ?
A．raise the eutectic point
B．Increase the minimum freezing point (onset of crystallization)
?
C．Decrease the freeze point
正确答案：C
(115)What is the minimum glycol content of Type 1 deicing/anti-icing fluid?
? A．30 percent. ? B．50 percent. ?
C．80 percent.
正确答案：C
(116)What is the minimum glycol content of type 2 deicing anti-icing fluid?
?
A．80 percent
? ?
B．50 percent C．30 percent
正确答案：B
(117)Freezing Point Depressant (FPD) fluids are highly soluble in water; however,
?
A．ice is slow to absorb it but fast to melt when in contact with FPD.
?
B．ice absorbs it very fast but is slow to melt when in contact with it.
?
C．ice is slow to absorb it, and to melt when in contact with it.
正确答案：C
(118)Freezing Point Depressant (FPD) fluid residue on engine fan or compressor blades
?
A．can increase performance and cause stalls or surges.