NO.PZ2018062003000111
问题如下：
Which of the following statements about labor productivity is most correct?
选项：
A.Measured as labor force/hour.
B.Can be measured directly.
C.Can not be measured.
解释：
B is correct.
Improved technology will increase potential GDP. Labor productivity is measured as output/hour.
考点：Labor productivity
解析：Labor productivity 可以被直接测量，所以B选项正确，C选项错误。
Labor productivity 测量方式是，output/hour，所以A选项错误。
如果labor productivity 是包含在total factor productivity里面的，不就是不能直接测量吗？老师课上说的是要用反求法算出total factor productivity
