现用质量分数为98%的浓硫酸(密度是1.84g／cm3)配制560g质量分数为1

发布时间：2017-06-04 19:44 │ 来源：www.tikuol.com

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问题：

现用质量分数为98%的浓硫酸(密度是1.84g／cm3)配制560g质量分数为14％的稀硫酸时，下列有关叙述不正确的是 [ ]

A．需要98%的浓硫酸80g

B．配制此溶液的步骤是：计算、量取、溶解

C．需要水的质量是481.6g

D．配制时用到的主要仪器有量筒、烧杯、玻璃棒

考点：溶液的配制

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作变速直线运动的物体，若前一半时间的平均速度为8m/s，后一半时间的平均速度是16m/s，则全程的平均速度是（　　）

A．14 m/s

B．10 m/s

C．11 m/s

D．12 m/s

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心悸气促10年，常咯血，梨形心，心尖区舒张期隆隆样杂音，有开瓣音。首选的治疗方法是（）

A.瓣膜置换术

B.阿托品

C.毛花苷C

D.神经垂体

E.左房室瓣单纯分离术

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白术的形状是

A．圆柱形

B．圆锥形

C．卵圆形

D．不规则肥厚团块

E．纺锤形

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题型：选择题

     He was 11 years old and went fishing every chance he got from the dock at his family's cabin on
an island in the middle of a New Hampshire lake. On the day __1__ the bass (鲈鱼) season opened,
he and his father were fishing early in the evening,   __2__ sunfish with worms. Then he tied on a
small lure (鱼饵) and practiced casting. When his pole __3__,   he knew something huge was __4__.
His father watched __5__ as the boy skillfully worked the fish alongside the dock. Finally,   he very
carefully lifted the __6__ fish from the water. It was the largest one he had ever seen,   __17__ it was
a bass. It was10 pm-two hours before the season opened. The father looked at the fish,   then at the
boy.
     "You'll have to __8__,   son,  " he said.
    "Dad!" cried the boy.
     "There will be other fish,  " said his father.
     "Not as big as this one,  " cried the boy.
     __9__ no one had seen them,   nor could anyone ever know what time he caught the fish,   the boy
could   10 by his father's firm voice that the decision was  11 . He slowly worked the hook out of the
lip of the huge bass and lowered it into   12 . The creature moved its powerful body and  13 . The boy
thought that he would never again see such a great fish.
     That was 34 years ago. Today,   the boy is a successful architect in New York City. And he was
  14 . He has never again caught such a magnificent fish as the one he    15   that night long ago. But
he does see   16   fish again and again every time he comes up against a question of principles. As his
father taught him,   principles are simple matters of right and wrong. It is only the practice of principles
  17 difficult. Do we   18 when no one is looking?
     We would if we  19   to put the fish back when we were young. For we would have learned the
truth. The decision to do right lives  20 in our memory. It is a story we will proudly tell our friends and
grandchildren.

( )1. A.until
( )2. A.providing
( )3. A.bent over
( )4. A.on the other end
( )5. A.with anxiety
( )6. A.delighted
( )7. A.and
( )8. A.bring it home
( )9. A.Even though
( )10. A.tell
( )11. A.passed
( )12. A.the wide container
( )13. A.fled
( )14. A.wrong
( )15. A.landed
( )16. A.a different
( )17. A.which is
( )18. A.do wrong
( )19. A.were taught
( )20. A.freshly

B. when
B. catching
B. came up
B. on the other hand
B. in surprise
B. frustrated
B. but
B. put it aside
B. Now that
B. say
B. changed
B. the broad sea
B. disappeared
B. right
B. saw
B. many big
B. it is
B. do right
B. told
B. fresh

C. after
C. feeding
C. turned over
C. on one hand
C. with admiration
C. frightened
C. however
C. put it back
C. Ever since
C. speak
C. fixed
C. the black water
C. floated
C. satisfactory
C. cast
C. even bigger
C. that is
C. do harm
C. were let
C. bad

D. before
D. supplying
D. broke down
D. at the either side
D. for fear
D. exhausted
D. yet
D. pick it up
D. In case
D. talk
D. refused
D. the small river
D. swam
D. pleased
D. threw
D. the same
D. this is
D. do good
D. ordered
D. strongly

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题型：选择题

药典规定的浸膏片崩解时限为（）

A.15分钟

B.20分钟

C.60分钟

D.30分钟

E.90分钟

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