更多“设随机变量X服从λ=2的泊松分布,则P(X≤0)=()。”相关的问题
东晋时期的顾恺之专擅人物画,在我国绘画史上他第一个明确提出“以形写神”的主张,其代表作有()。
A.《龙凤人物图》
B.《女史箴图》
C.《步辇图》
D.《历代帝王图卷》
E.《洛神赋图》
点击查看答案
男性,45岁,大便时突然剧烈头痛、恶心呕吐,为胃内容物,既往曾有一过性的右侧上睑下垂病史,急诊来院。如果患者既往无高血压病史,此病例最可能的初步诊断是()
A.颅内肿瘤
B.高血压脑出血
C.脑积水
D.蛛网膜下隙出血
E.脑梗死
点击查看答案
中国鸡的标准品种有()。
A.狼山鸡 九斤黄 丝毛乌骨鸡
B.北京白鸡 滨白鸡 仙居鸡
C.浦东鸡 萧山鸡 惠阳鸡
D.狼山鸡 浦东鸡 仙居鸡
点击查看答案
Cortex–M3使用的存储器格式是()
A.小端格式
B.大端格式
C.小端或大端格式
D.没有正确答案
点击查看答案
标注尺寸必须遵循两个原则:正确选择标注尺寸的起点——尺寸基准;正确使用标注尺寸的形式。
点击查看答案
幼儿园卫生保健工作的安全细节有()。
A . 物品放置
B . 药物管理
C . 保教人员带班要求
D . 环境创设
E . 户外活动
点击查看答案
属于气体混相驱采油技术的三采方法为()。
A、热水驱
B、烃类驱油
C、聚合物驱油
D、三元复合驱
点击查看答案
设函数fun的定义形式为: vold fun (char ch, float x)…… 则以下对函数fun的调用语句中,正确的是( )。
A.fun("abc",3.0);
B.t=fun('D',16.5);
C.fun('65',2.8);
D.fun(32,32);
点击查看答案
洛阳是我国著名古都,先后有()个王朝在此定都。
A.9
B.8
C.7
点击查看答案
西妥昔单抗首次使用时静脉输注90min,以后维持剂量每次静脉输注1小时。()
点击查看答案
About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along fine on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen. The study of isolated roots has provided an understanding of the relationship between shoots and roots in intact plants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic nitrogen compounds. This comes in handy for the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing, they produce protein, but only mature leaves can "export" protein to the rest of the plant in the form of amino acids.
A.A biochemical process.
B.The tip of a root.
C.A chemical compound.
D.A type of plant cell.
点击查看答案
Like many Americans, Mark Seery watched the Virginia Tech School shooting unfold on the cable news n...Contrary to traditional wisdom, Seery found that ______
A.the psychologists to whom the victims exposed their feelings often gave wrong advice
B.reporting their feelings on the Internet made the victims feel better than face-to-face talk
C.some people who revealed their feelings might turn out to be less well-off than otherwise
D.longer description of their feelings might be an indication that the victims suffered smaller loss
点击查看答案
客户的选择标准一般主要包括( ).(1分)A.从事证券交易的时间:要求客户在申请开展融资融券业务的证券公司所属营业部开设普通证券账户并从事交易满1年以上B.账户状态:客户开户手续齐全、资料完备,资金
A.(1分)
A.从事证券交易的时间:要求客户在申请开展融资融券业务的证券公司所属营业部开设普通证券账户并从事交易满1年以上
B.账户状态:客户开户手续齐全、资料完备,资金账户与证券账户对应关系清晰,交易结算状态正常
C.投资风格及业绩:投资风格稳健,无重大失误和损失,有一定的风险承受能力
D.资产状况:具有符合要求的担保品和较强的还款能力
点击查看答案
《文学漂流——西方经典名著导读》这门课程的宗旨,是以()为轴心,分享观点,提供路径,打破藩篱,拓展视野,重构记忆。
A.经典文本
B.绘画
C.音乐
D.雕塑
点击查看答案