問題詳情
4.为防止甲型H1N1病毒在人群中的传播,有人建议接种人流感疫苗,接种人流感疫苗能够预防甲型H1N1流感的条件之一是:甲型H1N1病毒和人流感病毒具有相同的
(A)侵染部位
(B)致病机理
(C)抗原决定簇
(D)传播途径
(A)侵染部位
(B)致病机理
(C)抗原决定簇
(D)传播途径
參考答案
答案:C
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
內容推薦
- E"I didn't hear them call my name," explained Shelley Hennig to Active Teens (AT) as
- 13.等质量的CuO和MgO粉末分别溶于相同体积的硝酸中,得到的Cu(NO3)2和Mg(NO3)2溶液的浓度分别为a mol•L-1和b mol•L-1。则a与b的关系为(A)a=b (B)a=2b
- 下列有关哺乳动物个体发育的叙述,错误的是(A)胚胎发育过程中也会出现细胞衰老(B)幼鹿经过变态发育过程长出发达的鹿角(C)胚后发育过程中伴有细胞分化(D)来自原肠胚同一胚层的细胞经分化发育成不同的
- ASince 1984, Philadelphia has been cleaning up its act. One by one, graffiti-covered walls are being
- When invited to a party the people who are usually punctual are______.(A)Italians (B)Germans
- C Student Membership--Cambridge Arts Cinema Cambridge Arts Cinema is one of the art houses in Britai
- 12.某酒精厂由于管理不善,酒精滴滴到某种化学品上而酿成火灾。该化学品可能是(A)KMnO4 (B)NaCl (C)(NH4)2SO4 (D)CH3COOH
- 3.图中三条曲线分别代表了动物物种多样性程度、动物数量易变程度及冬眠动物比例在不同类型生态系统中的变化趋势。代表动物物种多样性程度和数量易变程度的曲线依次是 (A)①② (B)②③ (C)①
- 11.已知反应A2(g)+2B2(g) 2AB2(g)的△H<0,下列说法正确的是(A)升高温度,正向反应速率增加,逆向反映速率减小(B)升高温度有利于反应速率增加,从而缩短达到平衡的时间(C)
- What made Happy different from Maxine and Patty?(A)She used her nose to search behind the mi
內容推薦
- 14.如图所示,位于光滑固定斜面上的小物块P受到一水平向右的推力F的作用。已知物块P沿斜面加速下滑。现保持的方向不变,使其减小,则加速度 (A)一定变小 (B)一定变大 (C)一定不变 (D)可能变小
- Shelley takes her dance teachers as a role medel mainly because she is .(A)determined (B)frie
- 43.How does the MAP decide on the message for a mural?(A)Bhaving discussions with people in the
- 下列属于种间竞争实例的是(A)蚂蚁取食蚜虫分泌的蜜露(B)以叶为食的菜粉蝶幼虫与蜜蜂在同一株油菜上采食(C)细菌与其体内的噬菌体均利用培养基中的氨基酸(D)某培养瓶中生活的两种绿藻,一种数量增加,
- If you're a member of Cambridge Arts Cinema, you will enjoy free_(A)Darkroom Gallery sh
- Which of the following words best describes the work of the MAP?(A)Difficult. (B)Dangerous.
- 物质的量之比为2:5的锌与稀硝酸反应,若硝酸被还原的产物为N2O,反应结束后锌没有剩余,则该反应中被还原的硝酸与未被还原的硝酸的物质的量之比是(A)1:4 (B)1:5 (C)2:3 (D)2:5
- What did Shelley often do after she became Miss Louisiana Teen?(A)She visited drunken drivers
- How long will the membership for Cambridge Arts Cinema last?(A)Four months. (B)Eight months.
- BFor those who study the development of intelligence(智力)in the animal world, self-awareness is an im
- 下列关于溶液和胶体的叙述,正确的是(A)溶液是电中性的,胶体是带电的(B)通电时,溶液中的溶质粒子分别向两极移动,胶体中的分散质粒子向某一极移动(C)溶液中溶质分子的运动有规律,胶体中分散质粒子的
- What suggestion does Shelley give to the teens?(A)Byourself with the support of friends.(B)Me
- 51.For what purpose is the text written?(A)Offering students cheaper tickets.(B)Announcing the o
- Why does the author mention apes and dolphins in the text?(A)They are most familiar to reade
- 下列徐树中正确的是(A)向含有CaCO3沉淀的水中通入CO2 至沉淀恰好溶解,再向溶液中加入NaHCO3 饱和溶液,又有CaCO3沉淀生成。(B)向Na2 CO3溶液中逐滴加入等物质的量的稀盐酸,
- 9.NA代表阿伏加德罗常数,下列说法正确的是(A)在同温同压时,相同体积的任何气体单质所含的原子数目相同(B)2g氢气所含原子数目为NA(C)在常温常压下,2L氮气所含的原子数为NA(D)17g
- 图1所示区域降水季节分配较均匀。2010年5月初,该区域天气晴朗,气温骤升,出现了比常年严重的洪灾。据此完成l~3题。 形成本区域降水的水汽主要来源于 (A)太平洋 (B)印度洋 (C)大
- DThe way we do things round hereSome years ago, I was hired by an American bank. I received a letter
- 某元素只存在两种天然同位素,且在自然界它们的含量相近,其相对原子质量为10,原子核外的电子数为下列叙述中错误的是(A)它是副族元素 (B)它是第六周期元素 (C)它的原子核内有63个质
- 15.一束复色光由空气射向玻璃,发生折射而分为a、b两束单色光,其传播方向如图所示。设玻璃对a、b的折射率分别为na和nb,a、b在玻璃中的传播速度分别为va和vb,则
- 53.The word "highlights" in Paragraph 2 probably means_____.(A)encourages (B)helps to
- 现有等浓度的下列溶液:①醋酸、②苯酚、③苯酚钠、④碳酸、⑤碳酸钠、⑥碳酸氢钠。按溶液pH由小到大排列正确的是(A)④①②⑤⑥③ (B)④①②⑥⑤③ (C)①④②⑥③⑤ (D)①④②③⑥⑤
- According to the author, what should we do with most cultural differences?(A)Ask the native
- 17.图中画出了氢原子的4个能级,并注明了相应的能量E。处在n=4的能级的一群氢原子向低能级跃迁时,能够发出若干种不同频率的光波。已知金属钾的逸出功为22eV。在这些光波中,能够从金属钾的表面打出
- 人体甲状旁腺分泌甲状旁腺素,当人体血钙浓度下降时,甲状旁腺素分泌增加,作用于骨和肾脏使血钙浓度上升。甲状腺C细胞分泌降钙素,当血钙浓度上升时,降钙素分泌增加,作用于骨等使血钙浓度下降。下列关于血钙