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【单选题】
油脂经过高温加热,尤其是反复加热时可能发生的变化,下列描述不对的是A.
热能供给量降低
B.
必需脂肪酸和维生素破坏
C.
消化吸收率提高
D.
形成有毒的聚合物
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反馈参考答案：
举一反三
【单选题】压疮淤血红润期的主要特点是
A.
皮下产生硬结，表皮出现水疤
B.
组织坏死发黑，炎性分泌物增多
C.
局部淤血导致血栓形成，组织缺血缺氧，
D.
浅层组织感染，形成潰疡
E.
局部皮肤红、肿、热、痛
【单选题】压疮淤血红润期的主要特点是
A.
皮下产生硬结，表皮出现水疱
B.
组织坏死发黑，炎性分泌物增多
C.
局部淤血导致血栓形成，组织缺血缺氧
D.
浅层组织感染，形成溃疡
E.
局部皮肤红、肿、热、痛
【单选题】Meaning fulness affects memory at all levels. Information that does not make any (1) to you is difficult to remember. There are several ways in which we can make material more meaningful. Many people,...
A.
consists
B.
categories
C.
items
D.
accurately
E.
sense
F.
associate
G.
striking
H.
integrated
【单选题】Meaning fulness affects memory at all levels. Information that does not make any (1) to you is difficult to remember. There are several ways in which we can make material more meaningful. Many people,...
A.
consists
B.
categories
C.
items
D.
accurately
E.
sense
F.
associate
G.
striking
H.
integrated
【单选题】下列说法正确的是
A.
乙烷只有反叠式和顺叠式两种构象异构体
B.
乙烷的构象异构体中，反叠式构象最稳定
C.
乙烷的构象异构体中，顺叠式构象最稳定
D.
所有烷烃都有构象异构体
E.
环己烷的船式构象比椅式构象更稳定
【单选题】压疮淤血红润期的主要特点是
A.
A 皮下产生硬结，表皮出现水疱
B.
B 组织坏死发黑，炎性分泌物增多
C.
C 局部淤血导致血栓形成，组织缺血缺氧
D.
D 浅层组织感染，形成溃疡
E.
E 局部皮肤红、肿、热、痛
【单选题】Meaning fulness affects memory at all levels. Information that does not make any (1) to you is difficult to remember. There are several ways in which we can make material more meaningful. Many people,...
A.
consists
B.
categories
C.
items
D.
accurately
E.
sense
F.
associate
G.
striking
H.
integrated
【单选题】Meaning fulness affects memory at all levels. Information that does not make any (1) to you is difficult to remember. There are several ways in which we can make material more meaningful. Many people,...
A.
consists
B.
categories
C.
items
D.
accurately
E.
sense
F.
associate
G.
striking
H.
integrated
【单选题】下列关于各种异构体描述正确的是
A.
有的对映异构体具有旋光性，有的对映异构体不具有旋光性
B.
顺反异构体和互变异构体都属于立体异构体
C.
环己烷的构象异构体只有椅式和船式两个
D.
两种立体异构体互呈物体和镜像的对映关系，则这两种异构体互称为对映异构体，简称对映体。
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