【单选题】【消耗次数:1】
静脉用超声造影剂的主要反射源是
微气泡
体液中的蛋白质成分
固体微粒
液体成分
红细胞
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相关题目
【单选题】 超声造影的反射源是
①  气体
②  血液中的红细胞
③  微气泡
④  血液中的胶原蛋白
⑤  以上都不对
【判断题】 面筋的主要成分是蛋白质、淀粉。
①  正确
②  错误
【单选题】 蛋白质是构成人体细胞组织的主要成分,约占体重的( )。
①  20%
②  15%
③  18%
④  25%
【单选题】 蛋白质是生命体最主要的组成成分,但它不是 物质。
①  遗传
②  固态
③  基本
④  液态
【单选题】 盆腔包块超声造影检查最常用的造影剂为
①  Levovist
②  Optison
③  Sonazoid
④  SonoVue
⑤  以上都不对
【判断题】 正常人尿液有时能检测出蛋白质和红细胞。
①  正确
②  错误
【单选题】 分泌蛋白质旺盛的细胞中,常含有( )。
①  发达的高尔基复合体和丰富的线粒体
②  发达的高尔基复合体和丰富的粗面内质网
③  发达的高尔基复合体和丰富的滑面内质网
④  大量的核糖体和丰富的线粒体
【单选题】 分泌蛋白质旺盛的细胞中,常含有( )。
①  发达的高尔基复合体和丰富的线粒体
②  发达的高尔基复合体和丰富的粗面内质网
③  发达的高尔基复合体和丰富的滑面内质网
④  大量的核糖体和丰富的线粒体
【单选题】 为减少造影剂肾病的发生风险,尽量避免哪一种造影剂
①  低渗造影剂
②  高渗造影剂
③  等渗造影剂
④  碘克沙醇
⑤  离子型低渗造影剂
【单选题】 引起富含蛋白质的液体渗出的最主要机制为( )
①  组织胶体渗透压降低
②  组织流体静力压升高
③  血管胶体渗透压升高
④  血管流体静力压降低
⑤  血管壁通透性升高
随机题目
【单选题】 What are two categories of vocabulary?
①  Receptive vocabulary and productive vocabulary
②  innate vocabulary and learned vocabulary
③  familiar vocabulary and unfamiliar vocabulary
④  new vocabulary and old vocabulary.
【单选题】 What are two grammar practice activities?
①  Mechanical practice and meaningful practice
②  Volume practice and communicative practice
③  Interest practice and meaningful practice
④  Mechanical practice and success oriented practice.
【单选题】 What are two broad categories of knowledge?
①  Implicit knowledge and explicit knowledge
②  Obvious knowledge and unobvious knowledge
③  Inductive knowledge and deductive knowledge
④  Refereed knowledge and inferred knowledge.
【单选题】 Which of the following steps are typical for the deductive grammar teaching method?
①  Give examples→explain rules→students do practice activities
②  Authentic language data is provided→induces learners to realize grammar rules→apply the new structure to produce sentences (the inductive method)
③  Explicit rules are give to students→Authentic language data is provided→apply the new structure to produce sentences (the guided discovery method)
④  All of the above.
【单选题】 Which of the following statement is not true?
①  Grammatical competence is essential for communication
②  There is a positive role of instruction for grammar learning
③  Grammar teaching can enhance learner proficiency
④  Grammar learning is completely useless for children.
【单选题】 Which of the following is not grammar presentation method?
①  Deductive method
②  Inductive method
③  Guided discovery method
④  Communicative teaching method.
【单选题】 What is the realistic goal of teaching pronunciation?
①  Consistency
②  Intellegibility
③  Communicative efficiency
④  All of the above.
【单选题】 Which type does the following production practice belong to? She sells sea shells on the seashore.
①  Make up sentences
②  Using meaningful context
③  Using pictures
④  Using tongue twisters.
【单选题】 Which type does the following production practice belong to? The students repeat what the teacher says. This activity can practice individual sounds, individual words, groups of words, and sentences.
①  Listen and repeat
②  Fill in the blanks
③  Make up sentences
④  Using meaningful context
【单选题】 What does the falling intonation on the question “where do you live ?” indicate?
①  I am telling you something you do not know
②  I have not finished yet
③  I am asking a genuine question
④  I know you have told me before.