Government officials reported three new cases of mad cow, bringing the total so far this year to 99. Last year, France recorded just 31 cases of the mad cow disease. The rising numbers are in part (1) a new testing program that focuses on cows that are most (2) . That program has (3) 39 cases. But still 60 new cases were identified in the usual way, (4) were found in 1999. Many scientists (5) that this year, five years after safety precautions were (6) , the number of cases would be (7) .
The rise in cases has (8) some scientists to question whether the disease can be transmitted in ways not yet understood. Scientists are still (9) the disease, first recognized in cows in 1986.
It appears that it is not caused by a bacteria, virus or fungus, but (10) infectious particles called prion, perhaps (11) a virus or other agent. The disease kills cells in the brain, (12) it spongy and fu
A. including
B. excluding
C. containing
D. enclosing
A patent is an exclusive right given to
an inventor for his or her invention. In other words, a patent is a monopoly
right given to the inventor for the invention. A patent confers on the inventor
the right to price and to sell the invention in any way he or she desires, in
the United States, patents are granted by the Patent Office for 17 years.
Although economists generally condemn monopoly as a form of market organization
since monopoly imposes costs on the economy, patents present a more subtle case
for monopoly theory. Specifically, can patent monopolies be justified In general, economists complain about the costs of monopoly because they believe that the same industry could be organized competitively. A patent monopoly grant for 17 years presents a different problem. That is, the purpose of the patent system is to encourage inv A. An increase in consumer well-being. B. A reduced price for consumers. C. Higher productivity. D. The promotion of a desirable invention. [填空题]《国铁集团客运部关于12306 网站新增业务办理事项的通知》(客营电【2021】15号)中具有()的自动售票机可按照相应流程规则,办理列车晚点退票业务。
[简答题]电除尘投退及运行维护中,有哪些危险点、危害后果及防控措施?
[单选题]DSA200型受电弓内装有降弓装置,当弓网故障时,可()降弓保护。
A.自动 B.半自动 C.手动 [判断题]( )三相半控桥式整流电路电阻性负载的控制角α移相范围是0~180°。
A.正确 B.错误 [单项选择]在测量接地电阻时,为保证测量准确,被测接地极,辅助接地极及指针之间的距离应大于()m。
A. 30 B. 20 C. 15 [单项选择]明胶海绵是目前应用较广泛栓塞物,可被机体完全吸收,其闭塞血管时间一般是()
A. 1~2周 B. 2~3周 C. 3~4周 D. 5周 E. 6周 [单项选择]无法鉴别心源性哮喘与支气管哮喘时,治疗应选用( )。
A. 吗啡 B. 地高辛 C. 异丙肾上腺素 D. 氨茶碱 E. 糖皮质激素 [单项选择]以色列的第一任王是()
A. 大卫 B. 扫罗 C. 所罗门 D. 罗波安 [单项选择]白细胞分类计数临床意义中,"病毒感染性疾病、某些杆菌感染;淋巴细胞恶性疾病;以及甲亢、婴儿佝偻病和营养不良等"等疾病中,患者血常规有()
A. 淋巴细胞增多 B. 淋巴细胞减少 C. 中性粒细胞增多 D. 中性粒细胞减少 E. 嗜酸性粒细胞增多 [单选题]单选题:手动操作废水泵前首先确认与该废水泵相连的排水管道上的闸阀处于( )状态,同时确认该排水管道所属的泄水管阀门处于( )状态。
A.开启/关闭 B.关闭/开启 C.开启/开启 D.关闭/关闭 [单项选择]以下哪一个不是放射免疫技术中理想核素标记抗原应有的特点()
A. 高的放射比 B. 同位素的半寿期应较长 C. 保持抗原在标记前的免疫活性 D. 核素在衰变过程中产生的射线应有较强的电离辐射性 E. 标记技术应简便、经济 [填空题]企业顾客研究的主要内容是_________,_________,_________和_________。
[多项选择]《关于电信网络等级保护工作有关问题的通知》(信电函[2006]35号)中指出,电信网络具有全程全网的特点,因此()
A. 基础网络和重要信息系统分开实施技术保护 B. 按照国家制定的有关标准和要求进行 C. 由电信网络的主管部门统一部署实施 D. 落实保护措施必须要对整个网络统筹监顾 我来回答: 提交
|