蓝彩月光石与玻璃仿月光石肉眼下的简要区别是：（）.A.无法区别 B.月光石蓝彩有方向

左眼外直肌麻痹时复相距离最大方向在（）。

A.左下方

B.左侧方

C.右上方

D.右侧方

E.正上方

已知某公司2001年会计报表的有关资料如下：
资 料 金额单位：万元

资产负债表项目	年初数	年末数
资产	8000	10000
负债	4500	6000
所有者权益	3500	4000
利润表项目	上年数	本年数
主营业务收入净额	(略)	20000
净利润	(略)	500

要求：
(1)计算杜邦财务分析体系中的下列指标(凡计算指标涉及资产负债表项目数据的，均按平均数计算)：
①净资产收益率；
②总资产净利率(保留三位小数)；
③主营业务净利率；
④总资产周转率(保留三位小数)；
⑤权益乘数。
(2)用文字列出净资产收益率与上述其他各项指标之间的关系式，并用本题数据加以验证。

What a difference Kathleen made in my college life! She was confident where I was shaky. She was disciplined while I was wild. She was responsible; I was lazy. We signed up for all of the same classes. I was so impressed with her. She worked with incredible diligence and with such self-assurance. I started to emulate her. I wanted to impress her. One day the homework assignment was to create an exciting illustration based on a pair of shoes. I was bursting with ideas and ran home and pulled out my favorite pair of antique thrift shop "old-lady shoes." I concentrated and worked and sweated and created a self-perceived masterpiece ! I called Kathleen and bragged that I’d finished the assignment. "What !" she exclaimed. "How could you possibly be finished already " I was so pleased with myself that I asked her if I could run by her apartment and show her my stunning creation. "Sure," she said. I raced down from my fifth-floor apartment, precious drawing in hand, and headed to her place. When I got there, I held up my paper with such glowing confidence, only to have my swelled cockiness crushed by Kathleen’s reaction: "Is that the only drawing you did " "Well, yes," I responded sheepishly. "Why " "C’mon," she said. "It’s still nice out. Let’s go to Washington Square Park and really do some drawings." I was puzzled; but when she led, I willingly followed. The whole way to the park, Kathleen animatedly talked about form, content, composition and really studying the subjects. She described the shoes in my drawing as the kind you see on the old women that sit in the park and feed pigeons. Her excitement was contagious, When we got to the park, she surveyed the scene and chirped, "Over there!" She pointed to a bench that was surrounded by discarded, crumpled paper bags, soda cans and empty cigarette packs. An old woman sitting on the bench had fallen asleep. Kathleen handed me her drawing pad and said, "Here. Now, draw the shoes on that woman! Draw them over and over until you really know what they look like." I drew and drew. I filled the sketchbook pages. They were the best I’d ever done thus far. Kathleen watched, and I felt fueled by my captive audience. I was showing off! It was such fun. The next day was the class critique. I felt so proud hanging my drawing up on the wall for all to see. I knew I had drawn an illustration to be proud of. As the class discussion circled the room to my piece, I heard my fellow students say, sensitive, accurate, beautifully stylized. I looked over at Kathleen, and she gave me that wink and loving smile of hers. College was going to be a lot more fun with her around. And it was. She continually inspired me, laughed with me, sketched with me and went out dancing with me. Our works of art were chosen for special exhibits, and we both made the dean’s list. We wore our caps and gowns together, and a few years later, I was "best woman" at her wedding. Whatever fears I had going into college about not being able to make new friends were gently washed away when I found my special, best friend. After we obtained our BFA degrees, the world opened up for both of us. Now we are both successful self-employed artists. I work in my lovely Chelsea cooperative apartment that I bought five years ago as a freelance, illustrator, a graphic designer. Kathleen, a sculptor and mural painter. Oops! I gotta run. Kathleen and I are meeting for dinner and a movie.

Why did the speaker say she was puzzled at Kathleen’s suggestion to go to Washington Square Park

A．Because she felt deeply hurt at the suggestion.

B．Because she felt the park is far away from their living places.

C．Because she didn’t know what’s the use going there.

D．Because she was wondering why Kathleen didn’t show enough interest in her work.

电流互感器的二次回路为防止与地短路，严禁接地。

按照工作过程不同，内燃机可以分为（）内燃机：

A.二冲程和三冲程

B.二冲程和四冲程

C.三冲程和四冲程

D.五冲程和六冲程