【单选题】Knowing that the demand for wheat is inelastic, if all farmers voluntarily plowed under 10 percent of their wheat crop, then
A.
consumers of wheat would buy more wheat.
B.
wheat farmers would suffer a reduction in their revenue.
C.
wheat farmers would increase their revenue.
D.
the demand for wheat would decrease.
【单选题】体育是关于人体构造、身体构造、身体发展的教育,它包括 、人体力学原理及其运用的研究。
【单选题】当250℉/121℃管道过热电门打开, 会引起哪个灯亮?
B.
空调跳开关断(PACK TRIP OFF)灯
C.
机翼/机身过热(WING BODY OVERHEAT)灯
D.
引气跳开关断(BLEED TRIP OFF)灯
【单选题】The theory of _______ was developed by Darwin and is now understood by nearly everybody in the world.