首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
The vegetative forms of most bacteria are killed by drying in air, although the different species exhibit pronounced differences
The vegetative forms of most bacteria are killed by drying in air, although the different species exhibit pronounced differences
admin
2011-01-26
51
问题
The vegetative forms of most bacteria are killed by drying in air, although the different species exhibit pronounced differences in their resistance. The tubercle bacillus is one of the more resistant, and vibrio cholcra is one of the more sensitive to drying In general, the encapsulated organisms are more resistant than the non-encapsulated forms. Spores are quite resistant to drying; the spores of the anthrax bacillus, for example, will germinate alter remaining in a dry condition for years or more. The resistance of the pathogenic forms causing disease of the upper respiratory tract is of particular interest in connection with airborne infection, for the length of time that a droplet remains infective is a result, primarily, of the resistance of the particular microorganism to drying.
Tuberculosis is highly infectious because ______.
选项
A、spores are resistant to drying
B、the causative organism is encapsulated
C、droplets of sputum remain infective for a long time due to the resistance of the organisms to drying
D、none of these
答案
C
解析
根据文章最后一句可知上呼吸道感染细菌在干燥空气中存活的时间长是导致其具有极强的传染性的原因。
转载请注明原文地址:https://kaotiyun.com/show/K9BO777K
0
考博英语
相关试题推荐
Lookattheformbelow.Someinformationismissing.Youwillhearawomanbookingexhibitionspaceonthephone.Foreachquest
Lookattheformbelow.Someinformationismissing.Youwillhearawomanbookingexhibitionspaceonthephone.Foreachquest
●Lookattheorganizationplanbelow.Itshowsthedifferentdivisionsofamanufacturingcompany.●Forquestions6--10,Where
•Readthearticlebelowaboutworkingindifferentsizedcompanies.•Aresentences16-22ontheoppositepage’Right’or’Wrong’
•Readthearticlebelowaboutworkingindifferentsizedcompanies.•Aresentences16-22ontheoppositepage’Right’or’Wrong’
•Lookatthenoticebelow,whichshowsthedifferentdivisionsofamanufacturingcompany.•Forquestions11-15,decidewher
随机试题
精准医疗是指以个体化医疗为基础,通过基因组、蛋白质组等技术,对大样本人群与特定疾病类型进行生物标记物的分析与鉴定、验证与应用,从而精确寻找到疾病的原因和治疗的靶点,最终实现对疾病和特定患者进行个性化精确治疗。根据上述定义,下列选项不属于精准医疗的是:
A.心脏中心部位钙化,有明显移动性B.冠状沟部呈树枝状钙化影C.肺门部位钙化影D.心内膜线状钙化影E.冠状动脉内钙化影下列病例X线片可见上述哪项表现:男性,70岁。无高血压和高血脂史,近3周来常有胸痛伴
A.0.02%NaF漱口液B.0.05%NaF漱口液C.0.2%NaF漱口液D.1.23%NaF凝胶E.2%NaF溶液每周漱口使用的是
低钾性碱中毒后期出现反常性酸性尿是因为
有机磷农药是目前使用较多的农药,用于有机磷中毒解救药物有
城市公共停车场应分()三类。
李某向陈某借款10万元,将一辆卡车抵押给陈某。抵押期间,卡车因车祸严重受损。李某将卡车送到某修理厂大修,后李某无力支付2万元修理费,修理厂遂将卡车留置。经催告,李某在约定的合同期间内仍未支付修理费。此时,李某亦无法偿还欠陈某的到期借款,陈某要求修理厂将卡车
光污染泛指影响自然环境,对人类正常生活、工作、休息和娱乐带来不利影响,损害人们观察物体的能力,引起人体不舒适感和损害人体健康的各种光。从广义上来说,光污染还包括了视觉污染,即城市环境中杂乱的视觉环境。根据上述定义,下列描述不涉及光污染的是(
下面关于解释程序和编译程序的论述,其中正确的一条是______。
A、Ithasseenasteadydeclineinitsprofits.B、Ithasbecomemuchmorecompetitive.C、Ithaslostmanycustomerstoforeignco
最新回复
(
0
)