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sunjin1988

The emission of sulfur dioxide when high-sulfur coal is burned is restricted by law. New coal-burning plants usually comply with the law by installing expensive equipment to filter sulfur dioxide from their emissions. These new plants could save money by installing instead less expensive cleaning equipment that chemically removes most sulfur from coal before combustion.

Which of the following, if known, would be most relevant to evaluating the claim above about how new coal-burning plants could save money?

a. Whether existing oil-burning plants are required to filter sulfur dioxide from their emissions
b. Whether the expense of installing the cleaning equipment in a new plant is less than the expense of installing the cleaning equipment in an older plan
c. Whether the process of cleaning the coal is more expensive than the process of filtering the emissions.
d. Whether lawful emissions of sulfur dioxide from coal-burning plants are damaging the environment
e. Whether existing plants that use the filtering equipment could replace this equipment with the cleaning equipment and still compete with new plants that install the cleaning equipment.

这红色这句话是什么意思 这么长的句子没读懂！？

2.Although the pesticide TDX has been widely used by fruit growers since the early 1960’s, a regulation in force since 1960 has prohibited sale of fruit on which any TDX residue can be detected.  That regulation is about to be replaced by one that allows sale of fruit on which trace amounts of TDX residue are detected.  In fact, however, the change will not allow more TDX on fruit than was allowed in the 1960’s, because ______.

A.pre-1970 techniques for detecting TDX residue could detect it only when it was present on fruit in more than the trace amounts allowed by the new regulations
A怎么理解 怎么翻译

serendipityh

These new plants could save money by installing
instead less expensive cleaning equipment that chemically removes most
sulfur from coal before combustion.
less expensive cleaning equipment that chemically removes most
sulfur from coal before combustion.
通过安装在combustion 之前从煤炭中移除most sulfur 的不是很贵的equipment, 这些工厂可以省钱.

pre-1970 techniques for detecting TDX residue
could detect it / only when it was present on fruit in more than the
trace amounts allowed by the new regulations
in+amount
1970年前的用来探测TDX残渣的技术只有当TDX出现在水果上的量超过new regulations 所允许的范围 才能测出TDX