(7分)金属具有广泛的应用,根据金属及其化合物的性质和用途,请回答: (1)下列

题型:填空题

问题:

(7分)金属具有广泛的应用,根据金属及其化合物的性质和用途,请回答:

(1)下列金属制品中,利用金属导电性的是     (填字母序号)。

A.黄金饰品        B.铝蒸锅          C.铜导线

(2)铁制品在沙漠地区不易锈蚀的原因是                        

(3)某化学小组用一定量的硝酸银和硝酸铜的混合溶液进行了如图所示实验,并对溶

液A和固体B的成分进行了分析和实验探究。

【提出问题】溶液A中的溶质可能有哪些?

【做出猜想】①只有硝酸锌        ②硝酸锌、硝酸银 

③硝酸锌、硝酸铜    ④硝酸锌、硝酸铜、硝酸银

【交流讨论】不合理的猜想是           (填序号)。

【实验探究】若猜想①成立,通过以下实验可探究固体B的成分,请填写下表。

实验步骤实验现象化学方程式及结论
取少量固体B,滴加        有气泡产生 

                   

固体B的成分是          

考点:合金金属的物理性质和用途金属材料
题型:填空题

已知各项均为正数的等比数列{an},a1•a9=16,则a2•a5•a8的值(  )

A.16

B.32

C.48

D.64

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.

The plane journey from Papa Westray to Westray in the Orkney Islands takes just 96 seconds, covering a distance of little over a mile. Six teenagers are to take the Loganair service to Westray Junior High after the local ferry (渡轮) service stopped. They are all aged 13-14 and will be flown to and from school until the end of the year when the ferry is scheduled to return.

Papa Westray had a population of just 70 and no secondary school. Westray, home to more than 600 residents, has around 70 pupils at the Junior High and nine full-time teachers. The school provides education to Standard Grade level but pupils choosing to study for their Highers must travel to the Orkney capital Kirkwall.

The students will fly to Westray each Tuesday and stay with host families for two nights before catching a return flight on Thursday. Loganair operating the eight-seater service has changed its schedule to ensure the children get to school on time. The company says the flight, with an average flight time of 96 seconds, is the shortest in the world.

Jonathan Hinkles, the commercial director, said, “While it is a popular tourist route for many visitors to Scotland, it’s also an important lifeline to those residents who live, work or do business in the Orkneys and it will make all the difference to ensuring those children who live on Papa Westray can continue their schooling throughout winter.” Willie McEwen, acting head teacher at Westray Junior High, said, “we are delighted that Loganair has come forward with this solution. Our children will enjoy the flying especially as, at this time of the year, it can be quite dangerous on the boat. ”

83. Which of the following is TURE according to the passage?

The six students can get to school in less than a minute sometimes.

Westray has a small population though big in size.

The plane can hold ten people at most each time.

The six students take the flight to school every day.

84. What can we learn about Papa Westray from the passage?

A. It is very poor.                                     B. It is located in Scotland.

C. It doesn’t have any school.                    D. It will have no ferry in the future.

85. How does Willie McEwen seem to feel about the flying?

A.       Surprised.            B. Worried.                 C. Satisfied.                  D. Disappointed.

86. Which of the following is the best title for the passage?

A. Children get lift to school on 96-second flight.

B. Six teenagers having trouble going to school.

C. The lucky students in Papa Westray.

D. The shortest flight in Papa Westray.

题型:填空题

根据轧辊轴线与坯料轴线方向不同,轧制可分为(),()和()等。

题型:填空题

ABC会计师事务所接受委托,审计Y公司2004年度的会计报表。A注册会计师了解和测试了与应收账款相关的内容控制,并将控制风险评估为高水平。A注册会计师取得2004年12月31日的应收账款明细表,并于2005年1月15日采用积极式函证方式向所有重要客户寄发了询证函。A注册会计师将与函证结果相关的重要异常情况汇总于下表:

异常情况 函证编号 客户名称 询证金额(元) 回函日期 回函内容
(1) 22 300000 2005年1月22日 购买Y公司300000元货物属实,但款项已于2004年12月25日用支票支付
(2) 56 500000 2005年1月19日 因产品质量不符合要求,根据购货合同,于2004年12月28日将货物退回
(3) 94 640000 2005年1月19日 2004年12月10日收到Y公司委托本公司代销的货物640000,尚未销售
(4) 82 900000 2005年1月18日 采用分期付款购货900000根据购货合同,已于2004年12月25日首付300000元
(5) 134 600000 因地址错误,被邮居退回

要求:针对上述各种异常情况,请问A注册会计师应分别相应实施哪些重要审计程序

题型:填空题

以下教育资源的基本概念正确的有()

A.教育资源是指适用于教育教学的物质条件、社会条件、自然条件

B.学习资源是指可资学习之源,只包括支撑教学过程的各类软件资料

C.当某一媒体被用于教学目的时,则被称为教学媒体

D.媒体成为教学媒体要具备两个基本要素:用于储存于传递以教学为目的的信息;用于教与学活动

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