哪种情况下可视为 PF 失能？

A. 层积云、高层云、卷层云、碎层云；

B. 卷云、卷层云、高层云、雨层云；

C. 碎层云、雨层云、高层云、层云

A. 几十公里到几百公里

B. 几百公里到几千公里

C. 几千公里到几万公里

A. 一旦出现35节机轮转动信号或机轮承重信号在5秒延迟后显示。Once a 35 knot wheel spin-up signal is present or a WOW signal after a 5 second delay.

B. 接地时。 At touchdown.

C. 一旦机轮承重信号在15秒延迟后显示。 Once a WOW signal is present after a 15 second delay.

D. 一旦出现25节机轮转动信号。Once a 25 knot wheel spin-up signal is present.

A. 只有脚蹬和起落架控制面板toe brakes and LDG GEAR control panel only

B. 只有停留刹车手柄和脚蹬Parking brake handle and toe brakes only

C. 脚蹬，停留刹车手柄和起落架控制面板Toe brakes, parking brake handle and LDG GEAR control panel

D. 电源勤务面板，脚蹬，停留刹车手柄ELECREICAL SERVICES panel, toe brakes, parking brake handle

A. 飞机全重小于或等于最大着陆重量（MLW）时，垂直下降率大于600 英尺每分钟或10 英尺每秒的着陆 A landing at a vertical descent rate greater than 600 feet per minute or 10 feet per second when the airplane gross weight is less than or equal to the maximum landing weight (MLW);

B. 飞机全重大于最大着陆重量（MLW）但小于或等于最大 起飞重量（MTOW），垂直下降率大于360 英尺每分钟 或6 英尺每秒的着陆；A landing at a vertical descent rate greater than 360 feet per minute or 6 feet per second when the airplane gross weight is greater than the maximum landing weight (MLW), but less than or equal to the maximum take-off weight (MTOW);

C. 飞机在一条可用的跑道表面侧滑，或着陆时发生不能控 制的侧滑并且从可用的跑道表面移动到不可用的跑道 的着陆； A landing where the airplane lands with an uncontrolled sideways skid or continues to move from the applicable runway surface to a runway surface that is not applicable;

D. 以上全部above all

A. 1.0dot

B. 1.5dot

C. 2.1dot

A. 3

B. 5

C. 10

A. 切变线两侧风的变化；

B. 800 米以下空中风向风速的明显改变；

C. 空间短距离内两点间风向风速的改变

A. 进近灯光系统，如果驾驶员仅使用进近灯光作为参考，应当能 同时清楚地看到和辨认“红色终端横排灯”或者“红色侧排灯” for the approach light system, if the pilot only uses the approach light as a reference, he/she should be able to clearly see and identify the "red end cross row lights (only exists in some foreign airports)" or "red side row lights (side short row lights)", otherwise he/she shall not descend below 30m (100 feet) above the elevation of the TDZ;

B. 跑道入口;
跑道入口标志;
跑道入口灯;
跑道端识别灯;
目视进近下滑道指示灯Runway threshold;
Runway threshold marks;Runway threshold lights;Runway end identification lights; VASI lights;

C. 接地区或者接地区标志;
接地区灯;
跑道或者跑道标志;
跑道灯TDZ or TDZ marks;(8) TDZ lights;(9) Runway or runway marks;runway lights

D. 以上全部 all of the above

A. 积云群

B. 中云

C. 积雨云