下列叙述中，正确的是（）。_第一章分子与细胞_全学科试题题库

当前学科：第一章分子与细胞

题目：单选
下列叙述中，正确的是（）。
答案： <查看本题扣1积分>

查看答案

答案不对？请尝试站内搜索

推荐知识点:

根据加热和冷却方法不同，普通的热处理方法大致可分为（）、（）、淬火和（）四种；表面热处理可分为表面淬火和化学热处理，渗碳属于（）

临时用电设备检修应先切断其电源，并挂上“有人工作，严禁合闸”警告牌。

成本预测过程包括制定预测计划制定，搜集和整理预测资料，选择预测方法，成本初步预测，影响成本水平的因素预测，成本预测，分析预测误差。其中（　）是预测工作的顺利进行的保证;而（　）是进行预测的重要条件

HBV现症感染者传染性强的标志是（）

斜桥的倾角取决于铁路线数目和平面布置形式，一般为（）

患儿，男性，9个月，体重10kg。诊断为先天性全聋（感音神经性），其他体格检查和化验检查等正常。拟全麻下施行人工耳蜗植入术，术中进行面神经监测。该患儿气道最狭窄部位在（）。

英国著名的卫星电视公司“空中广播公司”，其业主是（）

根据下列短文，回答题。　　A panel of government officials is worried．The air quality in some areas is not good．Theair is polluted with soot．The officials worry that the air is harmful to the people who breathethe air．The officials are expels．They study the environment．They diSCUSS ways to stop theair pollution．The panel decided to make，some changes to the law．　　The mew plan places strict limits on how much soot call be released into the air．Now，ameasurement of 65 parts of soot is considered safe．The new plan would reduce that number to30．The daily limit of pollution in the air would be cut in half．　　These new standards would affect industry．The limits would also affect people who ownwood stoves and fireplaces．The country will keep track of the air quality every day．Peoplewould be required to stop burning wood when the levels are high．They could also install a kindof special fireplace．These fireplaces burn very little wood．They do not pollute the air asmuch．Some countries will punish families who violate the ban．They will have to pay a fine fornot complying with the law．　　Some states do not have much industry．Their pollution problem is not too bad．Theywould stiU have to regulate how much pollution is released into the air．The experts hope thatthis ban will help keep the air cleaner．Before the plan becomes a law the public will have a chance to comment on it．Citizenswill have ninety days to ask questions and voice concerns about the plan．Then it will becomea law．The panel is made up of________．

在石油产品运动粘度测定中，使用内径0.4mm的毛细管粘度计其流动时间不少于（）。

哪种白血病最易发生DIC()