低碳钢的强度设计值是以（）的强度为依据而确定的。A、弹性阶段 B、屈服阶段 C、强化

六（1）班男、女生人数比是5：4，那么这个班的男生比女生，多20%．______．

甲公司的业务员王某采用格式条款的形式与乙公司签订了一份买卖合同，该合同预先加盖了甲公司的印章。合同约定由乙公司提供A类货物，甲公司支付货款。当乙公司按照合同约定向甲公司提供A类货物时，甲公司称签订合同的业务员王某在订立合同之前已被解除职务，其所订合同无效。后经乙公司交涉甲公司接受货物，同时双方商定由丙公司向乙公司支付货款。丙公司在同意向乙公司支付货款后，又以格式条款中关于价格的规定可以有两种解释为由未向乙公司支付货款。在此情况下，乙公司要求甲公司提供担保，甲公司以其公司依法可以转让的股票出质，与乙公司签订了质押合同，并将该股票交付给乙公司。 根据上述情况及《合同法》和《担保法》的规定，回答下列问题： (1)业务员王某签订的买卖合同是否有效说明理由。 (2)丙公司未向乙公司支付货款违约责任应由谁承担；说明理由。 (3)对格式条款中关于价格有两种解释应如何处理 (4)甲公司与乙公司的质押合同是否生效说明理由。

一般而言，产品整体性能开发包括的内容有（）。

A.质量开发

B.品种开发

C.功能开发

D.结构开发

E.使用方式开发

当车辆发生碰撞，如果车门不能及时打开，将对驾乘人员的安全造成严重危害，因而安全气囊系统在工作时，气囊控制模块发出信号给门锁控制模块，直接控制（），自动解除所有门的门锁，能够让驾乘人员及时逃生。

A.车身

B.发动机

C.门锁执行器

For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never ending flood of words. In (1) a job or advancing in one, the ability to read and comprehend (2) can mean the difference between success and failure. Yet the unfortunate fact is that most of us are (3) readers. Most of us develop poor reading (4) at an early age, and never get over them. The main deficiency (5) in the actual stuff of language itself—words. Taken individually, words have (6) meaning until they are strung together into phrases, sentences and paragraphs. (7) , however, the untrained reader does not read groups of words. He laboriously reads one word at a time, often regressing to (8) words or passages. Regression, the tendency to look back over (9) you have just read, is a common bad habit in reading. Another habit which (10) down the speed of reading is vocalization—sounding each word either orally or mentally as (11) reads.
To overcome these bad habits, some reading clinics use a device called an (12) , which moves a bar(or curtain) down the page at a predetermined speed. The bar is set at a slightly faster rate (13) the reader finds comfortable, in order to "stretch" him. The accelerator forces the reader to read fast, (14) word by word reading, regression and subvocalization practically impossible. At first (15) is sacrificed for speed. But when you learn to read ideas and concepts, you will not only read faster, (16) your comprehension will improve. Many people have found (17) reading skill drastically improved after some training. (18) Charlie Au, a business manager, for instance. His reading rate was a reasonably good 172words a minute (19) the training; now it is an excellent 1,378 words a minute. He is delighted that how he can (20) a lot more reading material in a short period of time.

A．our
B．your
C．their
D．other