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【多选题】
关于水性凝胶基质的特点,描述正确的是( )。A.
无油腻感，易于，易于洗除
B.
能吸收组织渗出液，不妨碍皮肤正常功能
C.
稠度小，利于药物释放，特别是水溶性药物的释放
D.
润滑性较差
E.
不易失水和霉变，不需加入较大量的保湿剂和防腐剂
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皮皮学刷刷变学霸
举一反三
【单选题】By the time Mr. Saint Laurent set up shop in Paris under his own name, he had always worked as a (n)
A.
showman.
B.
artist.
C.
painter.
D.
designer.
【单选题】When Mr. Smith took over the company, it was already heavily______ and had no money to pay the workers.
A.
in danger
B.
in relief
C.
in debt
D.
in return
【单选题】水平角测量时，角值β =b-a。现知读数a为82°33′24″，读数b为102°42′12″，则角值β是【 】
A.
20°18′46″
B.
20°08′48″
C.
20°42′24″
D.
20°38′12″
【简答题】Mr. Lang worked in a factory. As a driver, he was busy. Sometimes, he brought some materials to the factory, and most of the time, he had to carry the goods to the customers of the factory. It was not...
【单选题】—You seem familiar with Mr. John? —Sure, we ______ together for three years in the 1990s.
A.
have worked
B.
had worked
C.
are working
D.
worked
【单选题】By the time Mr. Saint Laurent set up shop in Paris under his own name, be had always worked as a(n)
A.
showman.
B.
artist.
C.
painter.
D.
designer.
【单选题】水平角测量时，角值β＝b－a。现已知读数a为182°33′24″，读数b为102°42′12″，则角值β是（ ）
A.
79°51′12″
B.
－280°08′48″
C.
280°08′48″
D.
－79°51′12″
【简答题】在零件图上,标注Φ6H7,表示要进行 ,钻底孔 。
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