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【单选题】
聚乙烯塑料性能上的主要不足，不包括( )。A.
耐介质性差
B.
易发生热氧老化
C.
易产生环境应力开裂
D.
表面粘附性差
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皮皮学刷刷变学霸
举一反三
【简答题】Nous (être)________étudiants en premières année. Nous (venir de sortir)________________de l’école secondaire. Nous (étudier)__________le français à l’Institut des Langues étrangères de Beijing. Nos pr...
【单选题】The author says that in some hot and dry areas it is advisable to ______.
A.
build big lakes to store water
B.
construct big pumping stations
C.
build small and cheap irrigation systems
D.
channel water from nearby rivers to cropland
【单选题】The author says that in some hot and dry areas it is advisable to ______.
A.
build big lakes to store water
B.
construct big pumping stations
C.
channel water from nearby rivers to cropland
D.
build small and cheap irrigation systems
【单选题】The author says that in some hot and dry areas it is advisable to ______.
A.
build big lakes to store water
B.
construct big pumping stations
C.
channel water from nearby rivers to cropland
D.
build small and cheap irrigation systems
【简答题】系统详细设计阶段最后产生的文档是
【简答题】翻转课堂的常见误区有哪些?
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