关于资源综合利用的规定，下列表述中正确的是( )。A．对利用城_爱下问搜题

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问题单项选择题

关于资源综合利用的规定，下列表述中正确的是( )。

A．对利用城市生活垃圾生产的电力，实行增值税先征后退的政策

B．利用石煤生产的电力按增值税即征即退的政策

C．以废旧沥青混凝土为原料生产的再生沥青混凝土实行增值税即征即退政策

D．利用石煤生产的电力按增值税实行先征后退的政策

答案

参考答案：C

解析：自2001年1月1日起，对下列货物实行增值税即征即退的政策：利用煤炭开采过程中伴生的舍弃物油母页岩生产加工的页岩油及其他产品；在生产原料中掺有不少于30%的废旧沥青混凝土生产的再生沥青混凝土；利用城市生活垃圾生产的电力；2004年1月1日起，利用石煤生产的电力按增值税应纳税额减半征收，对燃煤电厂的烟气脱硫副产品实行增值税即征即退政策。

完形填空

In 1982, Steven Callahan was crossing the Atlantic alone in his sailboat when it struck something and sank．He got into a life boat, but his supplies were   21 ．His chances of surviving were small． 22  when three fishermen found him 76 days later, he was alive —much   23  than he was when he started, but alive．
His   24  of how he survived is fascinating．His cleverness —how he   25  to catch fish, how he evaporated（蒸发） sea water to   26  fresh water—is very interesting．
But the thing that   27  my eye was how he managed to keep himself going when all hope seemed lost, and there seemed no   28  in continuing the struggle．He was starved and 29  worn-out．Giving up would have seemed the only possible choice．
When people   30  these kinds of circumstances, they do something with their minds that gives them the courage to keep going．Many people in   31  desperate circumstances 32   in or go mad．Something the survivors do with their thoughts helps them find the courage to carry on   33  difficulties．
"I tell myself I can   34  it," wrote Callahan in his book．-Compared to what others have been through, I'm fortunate．I tell myself these things over and over,  35  up courage．．．"
I wrote that down after 1 read it．It   36  me as something important．And I've told myself the same thing when my own goals seemed   37  off or when my problems seemed too terrible．And every time I've said it, I have always come back to my   38  ．
The truth is, our circumstances are only bad   39  to something better．But others have been through the much worse, that is, in comparison with what others have been through, you're fortunate．Tell this to yourself over and over again, and it will help you   40  through the rough situations with a little more courage．

C．instruction

B．differently

A．for the lack of

B．in the face of

C．in exchange for

D．as a result of

B．recommended

C．contributed

问答题简答题

交流电与直流电的概念是什么？