飞机正切电台时，如果电台在右侧，则电台相对方位应为（）.
A.0°
B.090°
C.270°
参考答案：B
In order to find ____ better job, he made up his mind to study ____ second foreign language.[ ]
A. the; a
B. a; a
C. the; the
D. a; the
从科学理论讲，事故发生的原因有哪些？
