美术课程资源主要包括自然资源、社会资源、网络资源和（）。 A.信息资源 B.学校资源

直线y=2与直线x+y-1=0的夹角是 [ ]

A.45°

B.60°

C.90°

D.135°

身份证是有______位数字组成的，前六位表示______，第7-14位表示______，第15--16位为______，第17位为______．

甲方(国有企业)于2004年3月10日以书面方式向乙方(有限责任公司)求购A产品，数量100台，每台单价2万元，于同年5月5日前一次供货，货到后15天内付款。甲方以房产作抵押，对所欠供货方的货款担保。
乙方于3月14日收到甲方的求购函后，于当天以电子邮件的方式回复甲方，同意所提的一切条件，表示完全可以按期供货。
双方另外于3月20日补签一份以甲方办公楼作抵押，为乙方200万元债权担保的书面合同。
乙方为了保证向甲方及时供货，又与丙方(合伙企业)签订一份向丙方购买100台A产品的购货合同，总买价150万元，货到后付款。合同规定丙方于4月30日前将货物直接运到甲方所在地，凭甲方的验货证明，乙当日以本票方式向丙方结清货款。
丙方将货物如期送到甲方，甲方开出验货合格清单。乙方也于当日通过开户银行开出金额150万元的本票交付丙方。丙方于5月3日将本票交银行进账时，出票银行告知，乙方无款支付，故拒绝付款。
丙方进一步调查得知，乙公司属于3位股东出资设立的有限责任公司，注册资本共300万元，其中两位股东出资共110万元全部到位，第三位股东以设备出资，作价190万元，但实际其价额只有30万元。
乙方于5月2日向甲方发货并且在5月15日向甲方索要货款，甲方拒付。理由是签订合同时，乙方并无A产品，属于欺诈行为，乙方应承担缔约过失责任。乙方根据抵押合同，要求法院以抵押物清偿甲方所欠乙的货款。法院认为甲方用于抵押的房产必须进行抵押登记，且事先已用于对丁公司180万元债权的抵押担保登记，抵押物总价值270万元。
同时甲、乙、丙三方还提出了以下问题：
(1) 甲方认为，货物由丙方供应，故货款应支付给丙方，因为乙方将供货的义务和收款权利均转移给了丙方。且甲、乙双方之间也无书面购销合同。
(2) 乙方认为，乙丙双方签订的合同无效，因为丙方属于合伙企业，无独立企业法人资格，故无权以企业名义对外签订合同。
(3) 乙方提出丙企业的合伙人之一A个人欠乙公司账款20万元，乙公司有权将A欠乙公司的20万元账款抵偿乙欠丙的部分货款。
(4) 丙提出，由于乙未按期支付货款，导致丙无法正常经营，申请清算。银行指定清算人清算的结果如下：
① 丙企业变现的资产价值22万元；
② 发生清算费用1.6万元，欠职工工资7万元，欠社会劳动保险费用3万元，欠税款8万元，欠其他企业货款55万元：
要求：根据以上资料，结合《合同法》、《公司法》和《票据法》的规定，回答下列问题。
(1) 甲乙双方有无书面购销合同
(2) 出票银行拒绝向丙方付款是否合法
(3) 丙方与乙方的书面合同是否有效
(4) 乙公司第三位股东出资不完整应如何处理
(5) 乙方是否应对甲方承担缔约过失责任
(6) 乙方与丙方、A三者之间的债权债务能否相互抵销
(7) 丙企业清算时，清算程序和手续应如何办理

阅读理解。

      Will there ever be another Einstein? This is the undercurrent (潜流) of conversation at Einstein memorial

meetings throughout the year. A new Einstein will appear, scientists say. But it may take a long time. After all,

more than 200 years separated Einstein from Isaac Newton.

      Many physicists say the next Einstein hasn't been born yet, or is a baby now. That's because the search

for a unified theory that would explain all the forces of nature has pushed current mathematics to its limits.

New math must be created after the problem can be solved.

      But researchers say there are many other factors working against another Einstein appearing anytime soon.

For one thing, physics is a much different field today. In Einstein's day, there were a few thousand physicists

worldwide, and the theorists who could argue with Einstein probably would fit into a streetcar with seats to

spare. Education is different, too. One key aspect of Einstein's training that-is little noticed is the years of

philosophy he read as a teenager-Kant, Schopenhauer and Spinoza, among others. It taught him how to think

independently about space and time and it wasn't long before he became a philosopher himself.

      And Einstein was a clever musician. The interplay between music and math is well-known. Einstein would

play his violin hard as a way to think through a knotty physics problem.

      Today, universities have produced millions of physicists. There aren't many jobs in science for them, so

they go to Wall Street and Silicon Valley to apply their analytical skills. Those who stay in science don't work

alone and they sometimes do experiment together which takes years. 

      It's hard to imagine a renegade (背叛者) like Einstein standing it. "Maybe there is an Einstein out there

today," said Columbia University physicist Brian Greene, "but it would be a lot harder for him to be heard."

1. According to the second paragraph, the next Einstein will _____.[ ]

A. have to create new math

B. create a unified theory

C. have to be born now

D. push math to its limits

2. The underlined words "knotty" in the fourth paragraph means _____.[ ]

A. easy

B. interesting

C. strange

D. difficult

3. Which of the following will be useful for the next Einstein to be born? [ ]

A. There will be music around.

B. There will be no problems to solve.

C. There will be suitable philosophy to study.

D. There are only a few physicists.

4. The bold words "unified theory" in Paragraph 2 refers to _____. [ ]

A. agreement

B. mathematical rule

C. unique idea

D. physical saying

下列不是皮带机运行过程监视的内容是（）。

A.皮带是否跑偏

B.煤中的杂物

C.减速机油位，及时注油