水体中的非离子氨是指存在于水体中的游离态氨。

不属于股权筹资优点的是（）。

A.能够形成企业稳定的资本基础

B.资本成本较低

C.财务风险较小

D.增加公司的信誉

下列选项哪些是Select（选择）>Colorrange（色彩范围）对话框中提供的selectionpreview（选区预览）方式（）

A．Grayscale（灰度）

B．BlackMatte（黑色杂边）

C．WhiteMatte（白色杂边）

D．GrayscaleMatte（灰度杂边）

阅读理解。

      Mark, a young person, tells me he wants to be a writer. I always encourage such people, but I also explain

that there's a big difference between "being a writer" and writing. In most cases these people are dreaming of

wealth and fame, not the long hours alone at a typewriter. "You've got to want to write," I say to them, "not

want to be a writer."

      The truth is that writing is a lonely, private and poor-paying affair. For every writer kissed by good luck

there are thousands more whose longing is never rewarded (报答). When I left a 20-year job in the U. S.

Coast Guard to become a writer, I had no hopes at all. What I did have was a friend who found me my room

in a New York apartment building. It didn't even matter that it was cold and had no bathroom. I immediately

bought a used typewriter and felt like a real writer. 

      After a year or so, however, I still hadn't got a break and began to doubt myself. It was so hard to sell a

story that hardly made enough to eat. But I knew I wanted to write. I had dreamed about it for years. I wasn't

going to be one of those people who die wondering "what if". I would keep putting my dream to the test-even

though it meant living with uncertainty and fear of failure. This is the shadow land of hope, and anyone with a

dream must learn to live there.

1. The passage is meant to _____. [ ]

A. warn young people of the hardship that a successful writer has to experience

B. advise young people to give up their idea of becoming a professional writer

C. show young people it's unrealistic (不现实的) for writers to seek wealth and fame

D. encourage young people to hunt for good jobs

2. What can be concluded from the passage? [ ]

A. Real writers often find their work interesting and rewarding.

B. A writer's success depends on luck rather than on effort.

C. Famous writers usually live in poverty.

D. The chances for a writer to become successful are small

3. Why did the author begin to doubt himself after the first year of his writing work? [ ]

A. Real writers often find their work interesting and rewarding.

B. A writer's success depends on luck rather than on effort.

C. Famous writers usually live in poverty.

D. The chances for a writer to become successful are small

4. "Shadow land" in the last sentence refers to _____. [ ]

A. the wonderland one often dreams about

B. the bright future that one is looking forward to

C. a world that exists only in one's imagination

D. the state (状态) of uncertainty before one's final goal is reached

1岁男孩，阵发性、痉挛性咳嗽半个月，接种过卡介苗，1：2000的结核菌素试验硬结直径15mm，胸片示右肺门增大，有结节状阴影，右中肺叶不张，血象正常。其诊断为（）

A.百日咳并肺炎

B.支气管异物

C.支气管淋巴结结核

D.原发综合征

E.肺炎

【背景资料】

某建设项目，业主将其中一个单项工程以工程量清单计价方式招标确定了中标单位，双方签订了施工合同，工期为6个月。各月分部分项工程项目和单价措施项目费用，见下表。

总价措施项目费用为12万元（其中安全文明施工费用6.6万元）；其他项目费用包括：暂列金额为10万元。业主拟分包的专业工程暂估价为28万元，总承包服务费用按5%计算；管理费和利润以人、材、机费用之和为基数计取，计算费率为8%；规费和税金以分部分项工程项目费用、措施项目费用、其他项目费用之和基数计取，计算费率为10%。

施工合同中有关工程款结算与支付的约定如下：

1.开工前，业主向承包商支付预付款，包括扣除暂列金额和安全文明施工费用后的签约合同价的20%以及安全文明施工费用的60%。预付款在合同期的后3个月从应付工程款中平均扣回。

2.开工后，安全文明施工费用的40%随工程进度款在第1个月支付，其余总价措施费用在开工后的前4个月随工程进度款平均支付。

3.工程进度款按月结算，业主按承包商应得工程进度款的90%支付。

4.其他项目费用按实际发生额与当月发生的其他工程款同期结算支付。

5.当分部分项工程工程量增加（或减少）幅度超过15%时，应调整相应的综合单价，调整系数为0.9（或1.1）。

6.施工期间材料价格上涨幅度在超过基期价格5%及以内的费用由承包商承担，超过5%以上的部分由业主承担。

7.工程竣工结算时扣留3%的工程质量保证金，其余工程款一次性结清。

施工期间，经监理人核实及业主确认的有关事项如下：

1.第3个月发生合同外零星工作，现场签证费用4万元（含管理费和利润）；某分项工程因设计变更增加工程量20%（原清单工程量为400m³，综合单价180元/m³），增加相应单价措施费用1万元，对工期无影响。

2.第4个月业主的专业分包工程完成，实际费用22万元；另有分项工程的某种材料价格比基期价格上涨12%（原清单中，该材料数量300m²，材料价格200元/m²）。

第4个月承包商应得工程款为多少万元？业主应支付给承包商的工程款为多少万元？