机长的副翼控制钢索卡滞了,其后可能的控制是怎样的?()
A.或者副翼配平,或者机长驾驶杆
B.只有机长驾驶杆
C.只有副驾驶的驾驶杆
D.副驾驶杆
参考答案:C
Mrs. Green would like to buy _____.
A. a kilo of apple B. two kilos of apples C. three kilo of apples
味觉的敏感度往往受食物或其他刺激物的温度影响,味觉的敏感性最高时的温度是:()
A.20~25℃
B.25~30℃
C.20~30℃
D.25~35℃