土方工程中，下列内容中不需增加工作面的是(　　 )。A．混凝土垫层 B．基础外表面刷

下列语句中都含有通假字的一项是（  ）

①善刀而藏之                ②割地而朝者三十有六国

③云销雨霁，彩彻区明        ④而刘夙婴疾病

⑤多于在庾之粟粒            ⑥虽趣舍万殊

A．②③④⑥

B．①②③⑥

C．①③④⑤

D．①②⑤⑥

根据《反不正当竞争法》的规定，下列各项中，属于欺骗性市场交易行为的是 ( )。

A．擅自使用他人的企业名称或者姓名，引人误认为是他人的商品

B．经营者采用财物或者其他手段进行贿赂以销售或者购买商品

C．投标者之间串通投标，抬高标价或者压低标价

D．利用有奖销售的手段推销质次价高的商品

Most computer systems are (71) to two different groups of attacks：insider attacks and outsider attacks．A system that is known to be (72) to an outsider attack by preventing (73) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (74) users．Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment,but also helps to prevent future attacks．These attacks are usually (75) by tools referred to as Intrusion Detection Systems．

（74）处填（）。

A．power

B．rights

C．authorized

D．common

对氨基马尿酸试验主要反映（）。

A.肾脏浓缩稀释功能

B.肾小管重吸收功能

C.肾小球滤过功能

D.肾血浆流量

E.近端肾小管排泌功能

简述锅炉结焦有哪些危害？