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下列属于工业化提取肝素方法的是（）。
A.碱性盐解-离子交换法B.酶法降解-季铵盐沉淀法C.碱性盐解-季铵盐沉淀法D.酶解-离子交换法
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The most ancient civilization have been studied by archeologists rather than historians because thos...A. However B. Furthermore C. Also D. Thus
As we have noted, it (3) that the earliest Neolithic (新石器时代的) societies were egalitarian people did not differ much in wealth, prestige, or power. Some later societies show signs of social (4) . One kind of evidence of inequality in an ancient society is (5) by burial finds. Archeologists generally (6) that inequality in (7) reflects inequality in life, at least in (8) and perhaps also in wealth and power. (9) , we can be fairly sure that a society had (10) in status if only some people were buried with special objects, such as jewelry or pots filled with food.And we can be (11) sure that high status was assigned at birth rather than (12) in later life if we find (13) differences in children’s tombs. (14) , some (but not all) child burials from (15) 5,500 to 5,000 B.C. at Tell es-Sawwan in Iraq, and from about 800 B.C. at La Venta in Mexico, are filled with statues and ornaments (16) that some children had high status from birth. But burials indicating differences in status do not (17) mean a society had significant differences in wealth. It is only (18) archeologists find other (19) differences, as in house size and furnishings, that we can be sure the society had different (20) classes of people.
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5个月健康男婴，因母亲有慢性病，给以人工喂养，喂以牛奶。下列有关牛奶的特点说明中哪项是不正确的
A．牛奶的蛋白质含量多，且以酪蛋白为主
B．牛奶含饱和脂肪酸较多，又无脂肪酶
C．牛奶中乳糖含量低于母乳
D．牛奶中矿物质盐类较少，缓冲力小
E．牛奶中铁含量少，吸收率低，易发生缺铁性贫血
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A . 副作用B . 毒性反应C . 变态反应D . 后遗效应
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医疗机构的药品管理必须执行的制度包括此题为多项选择题。
A.药品保管制度
B.进货检查验收制度
C.质量管理制度
D.配备依法经过资格认定的药学技术人员
E.严格按处方调配药品
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应收账款账户的期初余额为借方5000元，本期借方发生额3000元，本期贷方发生额9000元，该账户的期
应收账款账户的期初余额为借方5000元，本期借方发生额3000元，本期贷方发生额9000元，该账户的期末余额为()。 A.借方4000元 B．贷方4000元 C．借方1000元 D．贷方1000元
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（）的包装印刷应采用黑色。
A．粉煤灰硅酸盐水泥
B．复合硅酸盐水泥
C．普通硅酸盐水泥
D．火山灰质硅酸盐水泥
E．矿渣硅酸盐水泥
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下面哪种属于不正确的日常维护注意事项？（）
A.应尽量多次打开数控柜和强电柜的门
B.定时清理数控装置的散热及通风系统
C.定期检查和更换电动机电刷
D.制定数控系统日常维护的贵族制度
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仰韶文化艺术成就的代表是（）
A.磨制石器
B.彩陶
C.漆器
D.青铜器
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一个表格内含有多个页签，有几个页签就可以拆分成几个对象。
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角杆竖立时应向转角点内侧移动（）。
A . A、5～10cm
B . B、10～15cm
C . C、15～20cm
D . D、25～30cm
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ZD6-J型转辙机的主、副挤切（连接）销分别为（）。
A . 3t/3t
B . 3t/5t
C . 3t/9t
D . 5t/9t
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下列关于商业银行中间业务的特点的说法中,错误的是( )。
A. 不运用或不直接运用银行的自有资金 B. 划线支票只能取现,不能转账 C. 以接受客户委托为前提 D. 以收取服务费、赚取差价的方式获得收益
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本级年度合成训练成绩综合评定标准为：优秀—训练课目成绩合格率为（）%；
A.70 B.80 C.90 D.100
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