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【单选题】
已知有机物 A、
B.
C.
D.
E.
F之间的转化关系如图所示．D 是做汽车发动机的抗冻剂，E为聚合物，F的式量为26．根据信息回答下列问题． （1）写出A、F的结构：A______、F______；A中官能团名称______； （2）写出下列反应的化学方程式及反应类型：B转化为E的反应：______，反应类型______ C转化为D的反应：______，反应类型______．
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参考答案：
举一反三
【单选题】She refused to tell us the ______ of the news although we insisted that she should.
A.
source
B.
beginning
C.
birth
D.
origin
查看完整题目与答案
【单选题】Since she believed him to be both candid and trustworthy, she refused to consider the possibility that his statement had been ______.
A.
dissatisfied
B.
irrelevant
C.
insincere
D.
nonsensical
查看完整题目与答案
【单选题】( )是指在一个给定的数量和位置的需求集合和一个候选设施位置的集合下,分别为多个设施找到合适的位置并指派每个需求点到一个特定的设施,使之达到供应方和需求点之间的运输费用总和最低。
A.
最大覆盖模型
B.
集合覆盖模型
C.
P-中心模型
D.
P-中值模型
查看完整题目与答案
【单选题】She refused to _________ the door key to the landlord until she got back her deposit.
A.
hand in
B.
hand out
C.
hand down
D.
hand over
查看完整题目与答案
【判断题】仓库设备的操作,要求持证上岗率达100%
A.
正确
B.
错误
查看完整题目与答案
【单选题】He's earning as much money as possible now______ he can retire early.
A.
so that
B.
as soon as
C.
in addition t o
D.
Subsequently
查看完整题目与答案
【多选题】2014年卷一不定项99.甲国公司在乙国投资建成地热公司,并向多边投资担保机构投了保。1993年,乙国因外汇大量外流采取了一系列的措施,使地热公司虽取得了收入汇出批准书,但仍无法进行货币汇兑并汇出,甲公司认为已发生了禁兑风险,并向投资担保机构要求赔偿。根据相关规则,下列选项正确的是:
A.
乙国中央银行已批准了货币汇兑，不能认为发生了禁兑风险
B.
消极限制货币汇兑也属于货币汇兑险的范畴
C.
乙国应为发展中国家
D.
担保机构一经向甲公司赔付，即代位取得向东道国的索赔权
查看完整题目与答案
【单选题】She refused to ______the door key to the landlady until she got back her deposit.
A.
hand in
B.
hand out
C.
hand down
D.
hand over
查看完整题目与答案
【单选题】Her attitude to the party is __________ She said she liked it but she refused to   attend it. [    ]
A.
controversial
B.
contradictory
C.
contemporary
D.
conventional
查看完整题目与答案
【简答题】Rosa Parks said that she refused to leave her seat because she was fired of ______.
查看完整题目与答案
相关题目：
【单选题】She refused to tell us the ______ of the news although we insisted that she should.
A.
source
B.
beginning
C.
birth
D.
origin
查看完整题目与答案
【单选题】Since she believed him to be both candid and trustworthy, she refused to consider the possibility that his statement had been ______.
A.
dissatisfied
B.
irrelevant
C.
insincere
D.
nonsensical
查看完整题目与答案
【单选题】( )是指在一个给定的数量和位置的需求集合和一个候选设施位置的集合下,分别为多个设施找到合适的位置并指派每个需求点到一个特定的设施,使之达到供应方和需求点之间的运输费用总和最低。
A.
最大覆盖模型
B.
集合覆盖模型
C.
P-中心模型
D.
P-中值模型
查看完整题目与答案
【单选题】She refused to _________ the door key to the landlord until she got back her deposit.
A.
hand in
B.
hand out
C.
hand down
D.
hand over
查看完整题目与答案
【判断题】仓库设备的操作,要求持证上岗率达100%
A.
正确
B.
错误
查看完整题目与答案
【单选题】He's earning as much money as possible now______ he can retire early.
A.
so that
B.
as soon as
C.
in addition t o
D.
Subsequently
查看完整题目与答案
【多选题】2014年卷一不定项99.甲国公司在乙国投资建成地热公司,并向多边投资担保机构投了保。1993年,乙国因外汇大量外流采取了一系列的措施,使地热公司虽取得了收入汇出批准书,但仍无法进行货币汇兑并汇出,甲公司认为已发生了禁兑风险,并向投资担保机构要求赔偿。根据相关规则,下列选项正确的是:
A.
乙国中央银行已批准了货币汇兑，不能认为发生了禁兑风险
B.
消极限制货币汇兑也属于货币汇兑险的范畴
C.
乙国应为发展中国家
D.
担保机构一经向甲公司赔付，即代位取得向东道国的索赔权
查看完整题目与答案
【单选题】She refused to ______the door key to the landlady until she got back her deposit.
A.
hand in
B.
hand out
C.
hand down
D.
hand over
查看完整题目与答案
【单选题】Her attitude to the party is __________ She said she liked it but she refused to   attend it. [    ]
A.
controversial
B.
contradictory
C.
contemporary
D.
conventional
查看完整题目与答案
【简答题】Rosa Parks said that she refused to leave her seat because she was fired of ______.
查看完整题目与答案
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