中国古代著名的水利工程都江堰建于( )。(中山大学)
某银行2021年1月17日的欧元即时汇率:银行现钞卖出价779.48.银行现钞买入价747.33,中间价763.41,则5000欧元可向银行兑换( )元人民币。
甘草的现代研究结果表明:甘草总黄酮能延长乌头碱诱发的小鼠心律失常的潜伏期,甘草类黄酮和异甘草素能使乌头碱诱发的动物心律失常持续时间明显减少;甘草酸在体内的水解产物葡萄糖醛酸能与乌头类生物碱的羟基结合,生成低毒或无毒的葡萄糖醛酸络合物而由尿排出。
甘遂与甘草配伍,其LD50下降,毒性增强,该配伍连续给药7天,使实验大鼠循环、消化、神经系统有不同程度的损害,出现实验动物心率加快,ALT升高、心肌酶谱各项指标异常变化。
为了减少乌头的毒性,乌头炮制过程中,乌头碱发生的主要化学反应是( )
Passage 1 The World Cup has become the most streamed live sporting event the US has ever seen, as Americans tuned in to this year's tournament on their smart phones, tablets and computers in record numbers. A
of US interest in football this year has also led to record television audiences for broadcasts on ESPN and Uni-vision, the Spanish-language network. The US team's loss on Tuesday to Belgium averaged a 9.6 0vernight rating on ESPN, according to Nielsen, the highest for any World Cup match the network has broadcast. But a 50 per cent surge in live streaming compared with the previous record, set during the 2012 London Olympics, shows that the sport's appeal has grown particularly among younger, more digital, fans. Young people are energetic and fond of sporting. The World Cup is a great tournament of football, so they must be attractive. On the other hand, now the electronic devices are developing rapidly, more people have smart phones, tablets and computers. Then to watch the World Cup becomes much easier.US viewers have so far watched nearly 30m hours of streaming video on ESPN's World Cup website and apps, the network said, beating the previous record of 20.4m viewing hours during NBC's 2012 0lympics coverage. Univision has streamed l.5m hours since the start of the tournament. Last week's USA vs. Germany match drew a record 1.7m streaming viewers to ESPN at its peak, with streaming on Univision peaking at 747,000. Tuesday's USA vs. Belgium match peaked at 1.5m streams on ESPN and 680,000 On Univision. In comparison, live streaming of January's Super Bowl peaked at 1.1m. While the elimination of the US team leaves a question mark over US fans' interest in the rest of the tournament, Univision's audience for non-US games has been robust. Univision said its broadcast on Sunday of the Mexico vs. Netherlands match was the most-watched programme, of any kind, in US Spanish-language TV history, with an average 10.4m viewers. Its audiences have been the largest in cities with large Spanish-speaking populations, such as Miami, Los Angeles, Houston and New York. With most matches being shown during business hours, Americans are increasingly turning to their devices, such as smart phones, tablets and computers to keep up with the tournament. Fifa, football's governing body, said US fans make up 20 percent of its global digital audience and are spending more time on its website and apps than fans in Brazil, Germany, England and France combined. With different kind of electronic devices to watch World Cup, the number of audience becomes larger. The flood of demand caused some problems with ESPN's feeds, leading frustrated viewers to take to Twitter to complain about the match cutting out. That had also happened during the USA vs. Germany game.
Which of the following statements is Not true?
患者,男,30岁。鼻部疖挤压后出现寒战、高热、头痛,眼部周围组织红肿。最可能的致病菌是( )
变形杆菌
白色念珠菌
金黄色葡萄球菌
溶血性链球菌
铜绿假单胞菌
男,58岁。发热2周,查体:体温38℃,四肢及躯干皮肤针刺处可见瘀斑,胸骨压痛(+),心肺未见异常,脾肋下未及,血常规:Hb86g/L,WBC12.4×10⁹/L,PLT34×10⁹/L,骨髓细胞学检查:增生极度活跃,胞质内粗大颗粒的早幼粒细胞占0.75。
治疗用什么( )。
全反式维甲酸
HA方案化疗
伊马替尼
VLDP方案化疗
DA方案化疗
甲有限责任公司现有职工350人,公司设有董事会.监事会,监事会中有3名职工代表。下列表述中,不正确的是( )。
下列作品中,被认为是刺激19世纪50年代废奴主义兴起的一大原因, 对于美国奴隶制度的观点曾产生过意义深远的影响的作品是( )。