【单选题】【消耗次数:1】
生产性毒物入侵人体最常见、最危险的途径是( )。
消化道
皮肤
血液
呼吸道
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相关题目
【判断题】 工业毒物侵入人体的途径有呼吸道、皮肤和消化道。
①  正确
②  错误
【判断题】 工业毒物进入人体的途径有三种,即消化道、皮肤和呼吸道,其中最主要的是皮肤。
①  正确
②  错误
【单选题】 生产性毒物进入人体最常见的途径为
①  呼吸道
②  消化道
③  皮肤
④ 
⑤  口腔黏膜
【判断题】 实验室毒物进入人体有三种途径即皮肤、呼吸道、消化道。实验室防毒应加强个人防护。( )
①  A、正确
②  B、错误
【单选题】 有毒有害物品进入人体的途径主要由呼吸道、()、和消化道
①  A.皮肤
②  B.口腔
③  C.食品
④  D.眼睛
【单选题】 ( )不是生产性毒物进入人体的常见途径。
①  血液
②  皮肤
③  消化道
④  呼吸道
【单选题】 ( )是毒物进入人体最主要、最危险、最常见的途径。
①  呼吸道
②  消化道
③  大脑
④  皮肤
【判断题】 汞通常经消化道和皮肤进入人体。( )
①  A、正确
②  B、错误
【单选题】 引起上消化道最常见病因是
①  胃癌
②  食道静脉曲张破裂出血
③  急性糜烂性胃炎
④  消化性溃疡
【单选题】 上呼吸道梗阻最常见的原因是
①  舌(根)后坠
②  呕吐物、痰液、血液堵塞
③  异物堵塞
④  外伤导致的结构破坏
随机题目
【单选题】 Which of the following is the time when students work in groups?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small group
④  When students are expected to work on their own at their own speed.
【单选题】 What role does a teacher play in the following activity? The teacher gives students 2 minutes to skim a text, and when time is up, he asks students to stop and answer some questions.
①  Controller
②  Assessor
③  Organizer
④  Prompter
【单选题】 What are the possible roles of a teacher?
①  Controller, assessor
②  Organizer, prompter
③  Participant, resource-provider
④  All of the above.
【单选题】 Which of the following is the time when students study by themselves?
①  When all the students are under the control of the teacher
②  When students work in pairs on an exercise or a task
③  When students work in small groups
④  When students are expected to work on their own at their own speed.
【单选题】 What role does a teacher play in the following activity? When a student has made a sentence with borrow, “I borrowed a paper to write a letter”, the teacher says, “Well, we don’t say a paper, we say a piece of paper.”
①  Controller
②  Assessor
③  Organizer
④  Prompter.
【单选题】 Why do novice teacher often have problems giving clear instructions?
①  Their language proficiency is low
②  They are fresh from the university
③  Their instructions are too short
④  They are not able to target their instructions to the level of the learners.
【单选题】 When is appropriate for the teacher to give classroom instructions to students?
①  Give directions to tasks or activities, checking comprehension, giving feedback
②  Providing explanations to a concept or language structure, drawing attention
③  Setting requirements, checking comprehension, assigning homework
④  All of the above.
【单选题】 What are not good rules to follow for making instructions effective?
①  Use simple instructions and make them suit the comprehension level of the students
②  Use the mother tongue only when it is necessary
③  Use body language to assist understanding
④  Not model the task or activity before letting students move into groups or pairs .
【单选题】 What role does a teacher play in the following activity? When the students have in groups decided where to go for a spring outing, the teacher asks each group to tell the others why they have made such a choice.
①  Controller
②  Assessor
③  Organizer
④  Prompter.
【单选题】 What role does a teacher play in the following activity? The teacher asks students to produce conversations (either orally or in writing) by using particular patterns or expressions they have just learned.
①  Controller
②  Assessor
③  Organizer
④  Prompter.