题目内容

When labor usage is at 12 units, output is 36 units. From this we may infer that

A. the marginal product of labor is 3.
B. the total product of labor is 1/3.
C. the average product of labor is 3.
D. none of the above

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A. Both I and II are true.
B. I is true, and II is false.
C. I is false, and II is true.
D. Both I and II are false.

A. G81
B. G83
C. G73
D. G82

A. G98返回R平面；G99返回循环起始点。
B. G98返回初始平面；G99返回R平面。
C. G98返回程序起刀点；G99返回R平面。
D. G98返回R平面；G99返回程序起刀点。

A. G73
B. G83
C. G81
D. G82