在农业土地适度经营规模的评价指标中属于生态效益评价指标的有()。
A、产量
B、产值
C、土地肥力
D、自然资源利用效率
E、单位面积产值
参考答案:C, D
The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.
N and P are points on the number line below 20. Is P closer to 10 than N is ().
(1) P is greater than the average of 10 and N.
(2)
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
计算题:某车将方向盘转到极限位置时,外侧前轮滚过的圆周长为50.3m,求它的最小转弯半径。