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【简答题】
There is a wide and deep choice of a career. Whether he’s a hand in construction or sitting behind the desk working on a computer, everyone has some ideas of what is an attractive career. However, making a career choice is not simply a matter of following a dream; for most people it means a lot of research and soul searching. Choosing the right career becomes one of the most important decisions of an individual’s life. It used to be that one followed in the footsteps of their father or grandfather or took over the family’s business when it came to making a career choice. These days, a career path can start anywhere and then veer off into something totally different. Career choices must be realistic and well thought out. It is not uncommon for persons to start a career path and realize they have made a terrible mistake, feeling as if it may be too late to turn around. Not only does a career choice concern your strongest skills and interest, it is also something that you will be doing continuously to bring in income. This is why a career choice can be such a personal decision. Formerly it used to be unusual for someone to change occupations or careers more than once or twice in a lifetime; it is now even more unusual to keep the same career during someone’s working life. There are a great many measures in helping one choose the right profession. A number of websites offering tools such as career tests and information, educational resources, resume services and the kind can be found. It is important for one to research one’s career in this changing economy situation, and choose the best from several related career choices. 小题1:According to the author choosing the right career _________. A.is not difficult at all B.needs a lot of dreams C.is an interesting thing D.needs a lot of thoughts 小题2:The underlined phrase “veer off” in the second paragraph probably means _________. A.set out to do the same job B.change the former course C.compare two different things D.dream of getting an easy job 小题3:Nowadays it is common for one to _________. A.change his job often B.do the same job all his life C.find a few good jobs at a time D.live without a job for many years 小题4:All of the following are the tools on profession offered by websites EXCEPT _________. A.tests and information B.training courses C.employer’s phone numbers D.instructions on resume
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【判断题】在云计算服务层次中,虚拟化层是硬件即服务。()
A.
正确
B.
错误
【单选题】核苷酸可以通过脱水形成多核苷酸,与多肽一样,脱水后一个核苷酸的磷酸基团与下一个单体的糖相连。结果,在多核苷酸中形成了一个重复出现的糖—磷酸主链(如图),据此判断,下列叙述正确的是( )
A.
该图所示化合物的组成元素只有C、H、O、N
B.
在合成该图所示化合物时,需脱去5分子水,相对分子质量减少90
C.
在该图所示化合物分子结构中,一个磷酸基团往往和两个五碳糖 相连
D.
图中连接磷酸基团与五碳糖的化学键是磷酸二酯键,即DNA解旋酶作用的位点
【简答题】如图是 DNA 片段的结构图,请据图回答: ( 1 ) 图 甲 中有 __ 1 _ 种碱基 , 有 _ 2 __ 个完整的脱氧核苷酸单位 , 有 _ 3 __ 个游离磷酸基 . 从主链上看 , 两条单链方向 _ 4 _ ___; 从碱基关系看 , 两条单链 碱基 __ 5 _ __ . ( 2 )从图中可以看出 DNA 分子中的两条长链是由 ___ 6 __ 和 ____ 7 _ 交替连接 形成 ...
【单选题】根据《食品安全国家标准食品生产通用卫生规范》(GB14881-2013),食品生产企业库房内的清洁剂、消毒剂应与原料、成品等( )放置。
A.
分离
B.
远离
C.
分隔
D.
混合
【多选题】根据《食品安全国家标准 食品生产通用卫生规范》( GB 14881-2013),食品生产企业选址应该符合以下哪些要求?( )
A.
厂区不应选择对食品安全和食品宜食用性存在明显的不利影响,且无法通过采取措施加以改善的地址
B.
厂区不应选择有害废弃物以及粉尘、有害气体、放射性物质和其他扩散性污染源不能有效清除的地址
C.
厂区不宜选择易发生洪涝灾害的地区
D.
厂区应在离原料产区 3公里内选址
【单选题】A gloomy afternoon saw me taking my routine path through that construction site. For the walker s convenience, a set of stone steps had been built, which were fairly steep. That was the place I found ...
A.
They didn' t help each other.
B.
They climbed up the steps with ease.
C.
They limped their way upward with each other' s support.
D.
They climbed up the steps depending on a stick.
【单选题】根据《食品安全国家标准 食品生产通用卫生规范》GB14881规定,食品生产企业库房内的清洁剂、消毒剂应与原料、成品等( )放置。
A.
分离
B.
远离
C.
混合
D.
分隔
【多选题】根据《食品安全国家标准 食品生产通用卫生规范》(GB 14881-2013),食品生产企业厂房和车间应根据产品特点、生产工艺、生产特性以及生产过程对清洁程度的要求合理划分作业区,并采取有效分离或分隔。通常可划分为( )
A.
清洁作业区
B.
准清洁作业区
C.
一般作业区
D.
休息区
【单选题】从我国的中草药黄花蒿中提炼出来的抗疟原虫的药物是:
A.
氯喹
B.
伯喹
C.
乙胺嘧啶
D.
青蒿素
E.
奎宁
【判断题】节流阀是一种方向控制阀,通过旋转节流阀上的调整螺钉,来调节气流方向。( )A. 对 B. 错
A.
正确
B.
错误
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