EICAS显示器上显示的白色EPR数值和方框是:()
A、实际值
B、推力模式选择TMC计算值
C、人工选择值
D、油门杆选择EEC计算值
参考答案:A
已知圆x2+y2=9的弦PQ的中点为M(1,2),则弦PQ的长为 ______.
Look, dark clouds are gathering. It____________ as if it is going to rain [ ]
A. seems
B.looks
C. appears
D.feels