主页
学科
搜索
账户
常见问题
当前学科:教师招聘
题目:
填空题
奥尔加农是西方最早的复调音乐,是以格里高利圣咏为固定调,在它的上方或者下方加上一个平行四度或者五度声部,从而构成的二部声音乐,也叫()。
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:
根据下列短文,回答题。 Despite the fact that today viruses(病毒)are known to cause cancer in animals and incertain plants,there exists a great reluctance to accept viruses as being of importance in humancancer.Basic biological phenomena generally do not differ strikingly as one goes from one spe—cies to another.It should be recognized that cancer is a biological problem and not a problemthat is unique for man.Cancer originates when a normal cell suddenly becomes a cancer cellwhich multiplies widely and without apparent restraint.Cancer may originate in many differentkinds of cell,but the cancer cell usually continues to carry certain traits(特性)of the cell of origin.The transformation of a normal cell into a cancer cell may have more than one kind of cause.but there is good reason to consider the relationships that exist between viruses and cancer. Since there is no evidence that human cancer,as generally experienced,is infections,manypersons believe that because viruses are infections agents they cannot possibly be of importancein human cancer.However,viruses can mutate(突变)and examples are known in which a vi.rus that never kills its host can mutate to form a new strain of virus that always kills its host.Itdoes not seem unreasonable to assume that an innocuous(无害的)latent(潜伏的)virus mightmutate to form a strain that causes cancer.Certainly the experimental evidence now available isconsistent with the idea that viruses as we know them today,could be the causative(引起……的)agents of most,if not all cancer。including cancer in mall.Cancer should be considered to be a biological problem rather than a medical one because_________.
具有退虚热功效,治疗温病气分壮热烦渴的药物是()。具有退虚热功效,治疗肠痈腹痛的药物是()。
专项方案编制应当包括()内容
允许速度不超过160km/h的线路,在快速线路上,铺设混凝土岔枕的道岔前后,应用Ⅲ型轨枕过渡,两端过渡枕均不得少于()。
蒙太奇运用的经典之作是《战舰波将金号》和()。
球墨铸铁按()可分为珠光体球墨铸铁和铁素体球墨铸铁。
连续反复应用吗啡最重要的不良反应是:()
由线性电阻组成的电路称为()电路。
关于以太网“冲突”的描述中,正确的是()A.是由CSMA/CD的错误造成的B.是由网络管理员的失误造成的C.是由操作系统错误造成的D.是一种正常现象
关于医学伦理学的基本范畴,正确的是()