×
单选题
万一出现副翼卡阻，ROLL DISC手柄拉出后，多功能扰流板（MFSs）：In case of jammed aileron, after ROLL DISC handle pulled, the MFSs:
A
是部分不可用，在不工作一侧副翼，扰流副翼也不工作。Is partially de-activated, on the non-operational aileron side the spoileron is also non-operational.
B
不适用，扰流副翼仅在地面工作。Is not applicable, spoilerons work only on the ground.
C
不可用，两个扰流副翼都锁定在中立位置。Is de-activated, both spoileron are locked in neutral position
D
是完全可操作的，只要遮光板上的横滚选择电门已按压。Is still fully operational provided the roll select push button on the glare shield is pushed.
答案解析
正确答案：D
