C++语言类体系中,不能被派生类继承的有( )。A.转换函数 B.构造函数 C.虚

题型:单项选择题

问题:

C++语言类体系中,不能被派生类继承的有( )。

A.转换函数

B.构造函数

C.虚函数

D.静态成员函数

考点:计算机等级考试C++二级C++笔试
题型:单项选择题

椎管内麻醉时出现低血压的主要原因是()。

A.心脏抑制

B.血容量不足

C.血管扩张

D.迷走神经反射

E.B+D

题型:单项选择题

语法填空。

     Melissa Poe was 9 years old __1__she began a campaign for a cleaner environment by writing a letter

to __2__ President Bush. Through her own efforts, her letter was reproduced on over 250 __3__(donate) billboards(广告牌) across the country.

     The response __4__ her request for help was so huge that Poe established Kids For A Cleaner

Environment (Kids F. A.C.E) in 1989.There are now 300,000 members of Kids F. A.C.E worldwide

and it is the __5__(world) largest youth environmental organization.

     Poe has also asked the National Park Service to carry __6__ a "Children Forest" project in every

national park. In 1992, she was invited __7__ one of six children in the world to speak at the Earth

Summit in Brazil. In 1993, she __8__ (give) a Caring Award for her efforts by the Caring Institute.

__9__ the organization started, Kids F. A.C.E members have distributed and planted over 1 million

trees! "You need to start being a responsible, __10 _(environment) friendly person now, right away,

before you become a resourcesucking adult, " she explains.

题型:单项选择题

镶有装饰性银花的牛骨制的梳子

题型:单项选择题

家用燃气热水器的安装环境要求()

A、燃气热水器应安装在通风良好的非居住房间、过道或阳台内;

B、有外墙的卫生间内,可安装密闭式热水器,但不得安装其他类型热水器;

C、装有半密闭式热水器的房间,房间门或墙的下部应设有效截面积不小于0.02m2的格栅,或在门与地面之间留有不小于30mm的间隙;

D、房间净高宜大于2.4m;

题型:单项选择题

下列有关化学絮凝法的叙述,错误的是()。

A.在钻井液中加入了高分子化学絮凝剂

B.使钻屑、砂粒和劣质粘土等无用固相在钻井液中不水化分散,而且絮凝成较大的颗粒而沉淀

C.对膨润土等有用固相也发生絮凝作用

D.使膨润土等有用固相不发生絮凝作用,这些固相仍保存在钻井液中。

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