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【单选题】
下列各物质中,互为同系物的是
A.
CH 3 － CH 2 － CH 2 － CH 3 与
B.
醋酸和硬脂酸（ C 17 H 35 COOH）
C.
乙醇和甘油
D.
CH 3 CH 2 Cl 和 CH 2 ClCH 2 CH 2 Cl
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参考答案：
举一反三
【单选题】乙酸异戊酯的制备实验中,不是乙酸过量的原因是( )。
A.
乙酸廉价易得
B.
后处理简单，乙酸可与碳酸氢钠生成水溶性无机盐而水洗除去。
C.
乙酸毒性低
查看完整题目与答案
【单选题】What had been the principal use of the antlers?
A.
To help in removing trees and bushes to cultivate the land.
B.
To obtain the material for useful tools.
C.
To prepare the fields for fanning.
D.
To make many artifacts useful in dally life.
查看完整题目与答案
【单选题】The bushes have ________ big trees.
A.
grow up
B.
grow into
C.
growing
D.
grow with
查看完整题目与答案
【单选题】Most of the deserts ______ to be covered with bushes and trees. [     ]
A.
used
B.
were used
C.
use
D.
got used
查看完整题目与答案
【单选题】The cat padded across the road and towards the bushes just _______ the hornbeam trees, and she stopped.
A.
except for
B.
apart from
C.
beyond
D.
from
查看完整题目与答案
【单选题】The island had______.
A.
a lot of vegetation but no trees, bushes or flowers
B.
rio vegetation(植物) or wildlife
C.
plentiful supplies
D.
a few birds and animals
查看完整题目与答案
【单选题】在紫外光谱中,按照最大吸收波长由大到小的顺序排列下列化合物
A.
a>b>c
B.
a>c>b
C.
c>b>a
D.
c>a>b
查看完整题目与答案
【单选题】Insects live in bushes and grass and trees, in fields and houses and in the ground. Some even live on other animals. Did you know that there are more insects in the world than any other kind of animal...
A.
in bushes
B.
in the ground
C.
on some animals
D.
all of the above
查看完整题目与答案
【单选题】临床中,下列哪种疾病不能用直接Coombs试验进行检测?
A.
检测母体Rh(D)抗体
B.
新生儿溶血症
C.
自身免疫性溶血症
D.
缺铁性贫血
E.
药物诱导溶血
查看完整题目与答案
【单选题】适于治疗癫痫不典型小发作和婴儿痉挛的药物是（）
A.
地西泮
B.
苯妥英钠
C.
硝西泮
D.
丙戊酸钠
E.
卡马西平
查看完整题目与答案
相关题目：
【单选题】乙酸异戊酯的制备实验中,不是乙酸过量的原因是( )。
A.
乙酸廉价易得
B.
后处理简单，乙酸可与碳酸氢钠生成水溶性无机盐而水洗除去。
C.
乙酸毒性低
查看完整题目与答案
【单选题】What had been the principal use of the antlers?
A.
To help in removing trees and bushes to cultivate the land.
B.
To obtain the material for useful tools.
C.
To prepare the fields for fanning.
D.
To make many artifacts useful in dally life.
查看完整题目与答案
【单选题】The bushes have ________ big trees.
A.
grow up
B.
grow into
C.
growing
D.
grow with
查看完整题目与答案
【单选题】Most of the deserts ______ to be covered with bushes and trees. [     ]
A.
used
B.
were used
C.
use
D.
got used
查看完整题目与答案
【单选题】The cat padded across the road and towards the bushes just _______ the hornbeam trees, and she stopped.
A.
except for
B.
apart from
C.
beyond
D.
from
查看完整题目与答案
【单选题】The island had______.
A.
a lot of vegetation but no trees, bushes or flowers
B.
rio vegetation(植物) or wildlife
C.
plentiful supplies
D.
a few birds and animals
查看完整题目与答案
【单选题】在紫外光谱中,按照最大吸收波长由大到小的顺序排列下列化合物
A.
a>b>c
B.
a>c>b
C.
c>b>a
D.
c>a>b
查看完整题目与答案
【单选题】Insects live in bushes and grass and trees, in fields and houses and in the ground. Some even live on other animals. Did you know that there are more insects in the world than any other kind of animal...
A.
in bushes
B.
in the ground
C.
on some animals
D.
all of the above
查看完整题目与答案
【单选题】临床中,下列哪种疾病不能用直接Coombs试验进行检测?
A.
检测母体Rh(D)抗体
B.
新生儿溶血症
C.
自身免疫性溶血症
D.
缺铁性贫血
E.
药物诱导溶血
查看完整题目与答案
【单选题】适于治疗癫痫不典型小发作和婴儿痉挛的药物是（）
A.
地西泮
B.
苯妥英钠
C.
硝西泮
D.
丙戊酸钠
E.
卡马西平
查看完整题目与答案
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