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【单选题】
全封闭制冷压缩机电动机绕组必须具有良好的化学稳定性是因为电动（）。A.
制冷剂和润滑油长期浸泡中运转
B.
电压波动和较高温度的环境中
C.
气态制冷剂的强烈冲击下运转
D.
满载或超载的情况下启动并运转
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】水痘的出疹特点是
A.
发热1-2天出疹，出疹时高热
B.
高热3-4天出疹，出疹时热更高
C.
热3~5天、热退出疹
D.
发热1-2天出疹，1天出齐，伴颈淋巴结肿大
E.
发热1~2天出疹，斑疹、丘疹、疱疹、结病同时出现
【单选题】I don’t clearly remember who _____ the question whether it is good for children _______ by their grandparents but I clearly remember it ______ a heated discussion.
A.
brought up; to be brought up; brought about
B.
raised; to be raised; brought out
C.
brought in; to be brought up; brought up
D.
brought up; to be raised; brought up
【多选题】有关食品毒理学描述正确的是
A.
是借助基础毒理学的基本原理和方法开展研究
B.
研究食品中外源化学物质的性质、来源及对人体的损害作用、作用机制、安全性评价
C.
依据研究，提出预防管理措施
D.
以食品安全性评估为重点，将食品毒理学从食品营养和卫生学科中单独分离出来
【单选题】Which of the following was not clearly stated?
A.
Photographs of the faces to be recognized were given to the subjects.
B.
Remembering can be tested in different ways.
C.
Faces were easier to remember than names.
D.
Faces were more difficult to remember than names.
【单选题】It has been clearly stated that whoever can solve the problem first shall be entitled ______ the great honour-'Talent of the School'. [ ]
A.
for
B.
to
C.
in
D.
on
【单选题】It's clearly stated that you ______ copy the site without written permission from the webmaster.
A.
should not
B.
ought not
C.
should
D.
ought to
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