WK-10型挖掘机的转向是由（）实现的，它的闭合或断开使左、右两根轴或分离或连接。

根据招标文件的规定，允许投标人投备选标的，评标委员会可以对中标人所投的备选标进行评审，以决定是否采纳备选标。不符合中标条件的投标人的备选标予以考虑。

已有定义int(*p)()，指针p可以

A．代表函数的返回值

B．指向函数的入口地址

C．表示函数的类型

D．表示函数返回值的类型

阅读理解。

     My bookshelves are full of dust-and with good reason. When it comes to cleaning that part of my

home, I suffer from the most serious case of avoidance (回避反应症).

     The thing is this: when I do set out to clean and re-organize my books, which seldom happens, I

place myself into a really bad situation. No sooner do I take a title from the shelf, blow off the dust, and

wipe down the cover than I find myself sitting on the floor with legs crossed and my back against the

wall. Pretty soon books get piled up on my legs as I am reunited with old friends.

     It is as if these books have voices, and each wants to say its piece. "Remember me? I was given to

you when you went into the Navy, so that you would never lack for companionship," one whispers.

Another says, "I was your first book of poems, given to you before you learned to love poetry." And

a third, "I was the book that made history so attractive to you."

     Perhaps the greatest pleasure of re-organizing my books are the surprises - or better said,

reunions-that occur. During my latest book-cleaning adventure, I found one that had fallen behind the

shelf: "Tales of Edgar Allan Poe." Not an unusual title, but the words written on the first page made it

very special: "With Love from Mom and Dad, Christmas 1965." What's this? A book on the physics

of lasers().It is filled with mathematical statements, and I had bought it at a library sale when I was 12,

not long after the laser had been invented. I couldn't understand a bit of it, but I did learn what "laser"

meant.

     What I end up with when I empty my bookshelves is a cross-section (横剖面) of my personal

history. It's like a road cut where one sees all the layers of rock going back through time to the beginning

of the simplest life forms. The books I've read-and kept-are not just old friends. They are my résumé ?

1.What could be said about the author?

A. He is too busy to tidy up his bookshelves.  

B. He considers his books treasured possessions.

C. He has made a lot of notes in his books.    

D. He is a lover of science books.

2. By saying that his books have voices, the author means            .

A. hey bring back happy memories  

B. they are recorded in human voice

C. they say a lot about human history  

D. they offer good topics for discussion

3.What does the author enjoy most from re-organizing his books?

A. Finding some missing books.          

B. Putting books in good order.

C. Learning something new from the books.

D. Rediscovering interesting stories behind some books.

4. The underlined word "résumé" in the last paragraph probably means __________.

A. personal history  

B. precious notes

C. good companion

D. imply life forms  

患者左眼"单纯疱疹病毒性角膜炎"多次复发后视力下降至0.08，一周前感冒后再次出现眼红痛，左眼睫状充血（++），角膜中央有5mm×4mm灰白全层浑浊区，荧光素染色（+），2点及9点时钟位有基质深层新生血管形成。

手术后最主要的并发症是（）

A.前房出血、植片原发性失代偿、缝线反应

B.角膜上皮缺损、葡萄膜炎、白内障

C.低眼压、黄斑水肿、角膜后膜形成

D.病毒性角膜炎复发、继发性青光眼、植片排斥反应

E.术后高度散光、视网膜脱离、眼内炎