第21题:[单选题]When an ASR procedure terminates at less than 2 miles from touchdown, the distance from touchdown and advisory altitude are normally passed at _______ intervals. A.one and a half miles B.one mile C.two miles D.half a mile 参考答案:D
第31题: [单项选择]To make this ______ clear we shall have to look closely into biology’s long history. A. distinction B. indication C. recognition D. constitution 参考答案:A 答案解析:句意:为了搞清楚这一差别,我们必须认真地审视一下生物学发展的漫长历史。distinction意为“区别;差异”;indication意为“标示,迹象”;recognition意为“(正式的)承认,认可
第32题: [单项选择]血站对献血者每次采集血液量一般为() A. 100ml,两次采集间隔期不少于6个月 B. 100ml,两次采集间隔期不少于12个月 C. 200ml,两次采集间隔期不少于6个月 D. 300ml,两次采集间隔期不少于一年 E. 400ml,两次采集间隔期不少于一年 参考答案:C