GWD1-33

vanessa835625

谁能给我解释一下这道题，多谢

Q33:

A company plans to develop a prototype weeding machine that uses cutting blades with optical sensors and microprocessors that distinguish weeds from crop plants by differences in shade of color.  The inventor of the machine claims that it will reduce labor costs by virtually eliminating the need for manual weeding.

Which of the following is a consideration in favor of the company’s implementing its plan to develop the prototype?

There is a considerable degree of variation in shade of color between weeds of different species.

The shade of color of some plants tends to change appreciably over the course of their growing season.

When crops are weeded manually, overall size and leaf shape are taken into account in distinguishing crop plants from weeds.

Selection and genetic manipulation allow plants of virtually any species to be economically bred to have a distinctive shade of color without altering their other characteristics.

Farm laborers who are responsible for the manual weeding of crops carry out other agricultural duties at times in the growing season when extensive weeding is not necessary.

running

下面哪一项需要考虑以利于公司实施计划。选D.

也就是说，评价这个计划，需要考虑的是有没有其他同样是很经济的方法呢或者说有对此计划有辅助作用的方法？D说的就是辅助方法，并且很经济。

你发错位置了。

[此贴子已经被作者于2005-12-15 10:55:09编辑过]

vanessa835625

多谢