{{B}}Singing Alarms Could Save the
Blind{{/B}} If you cannot see, you may not be able to find your way out of a burning building -- and that could be fatal. A company in Leeds could change all that{{U}} (51) {{/U}}directional sound alarms capable of guiding you to the exit. Sound Alert, a company{{U}} (52) {{/U}}the University of Leeds, is installing the alarms in a residential home for{{U}} (53) {{/U}}people in Sommerset and a resource centre for the blind in Cumbria. {{U}} (54) {{/U}} produce a wide range of frequencies that enable the brain to determine where the{{U}} (55) {{/U}}is coming from. Deborah Withington of Sound Alert says that the alarms use most of the frequencies that can be{{U}} (56) {{/U}} by humans. " A. noise B. sound C. music D. bell [单选题]农商行理财业务人员每年的培训时间不少于()小时。
A.A.100 B.B.50 C.C.20 D.D.10 [单选题] 在游泳池或设有电路的水槽内,规定安全电压为()V。
A.6 B.12 C.33 D.36 [单选题]房地产行政管理部门对房地产经纪行业进行年检和验证管理,以下说法中,错误的是( )。
A.它可以督促房地产经纪机构及时进行变更登记 B.它可以当场注销一些名存实亡的房地产经纪机构 C.它有利于更精确地统计房地产经纪机构数目 D.它有助于总结行业普遍存在的经验,发现普遍性问题 [单选题](67080)37°探头发射的超声波从轨头以折射角( )方向传播到轨底。(1.0分)
A.50° B.30° C.37° D.0° [填空题]()是通过教学过稈中的非止式观察搜集关于学生学业成就的信息。
[判断题]轨道动态不平顺的检查项目为轨距、水平、轨向、高低、扭曲、复合不平顺、车体垂向振动加速度、车体横向振动加速度、轨距变化率等。
A.正确 B.错误 [单项选择]Mint. com has benefited from a cultural shift as well as a tectmological one. During the free-spending housing bubble, a Web site that encouraged people to manage spending, comparison, shop, and save was definitely out of step with the prevailing mood. But once the financial and housing markets tanked and the nation" went into recession, the zeitgeist (时代精神) shifted. Shrinking top lines have caused people to focus on the bottom line, and the savings rate has spiked. Third homes and luxury goods are out; coupons (优惠券) and growing your own vegetables are in. Saving is the new borrowing. Thus considered, Mint. corn, which launched in September 2007, timed the market perfectly. It hit the Web at a time when more Americans suddenly had the time, inclination, and motivation to manage their financial affairs more prudently. And it gave them a way to do it without having to spend a dime.
What is the main reason that mint. com is successful A. it offers free service. B. It came into the market at a perfect time. C. It meets people’s expectations of websites. D. It catered to people’s interest in planting vegetables. [多选题]意识产生经历的阶段有( )
A.有一切物质都具有的反应特性到生命物质的刺激感应性 B.由低等生物的刺激感应性到动物的感觉与心理 C.由动物的感觉与心理到人的意识的产生 D.由感性认识到理性认识 [单项选择]关于汞中毒以下说法正确的是()
A. 汞为灰白色质软的重金属 B. 可溶于水 C. 人类在正常的生活中接触不到汞及其化合物 D. 尿汞阳性是诊断急性汞中毒早期的重要指标 E. 汞的无机化合物主要是通过消化道侵入人体 我来回答: 提交
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