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【简答题】
试述心室肌细胞动作电位的产生机制。
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举一反三
【单选题】关于软膏制备说法错误的是
A.
可溶性药物、水溶性药物与水溶性基质混合时,可直接将药物水溶液加入基质中
B.
可溶性药物、水溶性药物与油脂性基质混合时,一般应先用少量水溶解药物,以羊毛脂吸收,再与其余基质混匀
C.
油溶性药物可直接溶解在熔化的油脂性基质中
D.
中药提取液可浓缩至稠浸膏,再与基质混合
E.
挥发性或热敏性药物应在熔融基质降温至60℃左右,再与药物混合均匀
【简答题】系统误差和偶然误差有什么不同?在测量工作中对这二种误差应如何处理?
【单选题】听力原文: A Chinese Foreign Ministry spokesman denies that China is buying an air-borne military radar system from Israel even though Israeli officials have confirmed they are supplying the technology, Re...
A.
rejects the report that China is importing advanced military equipment from Israel
B.
criticizes an unnamed country for spreading the rumor
C.
denounces the New York Times report as irresponsible
D.
admits there is military cooperation between China and Israel
【简答题】You Mi, a lovely and confident 17-year-old student, is the first Chinese high school student to appear on the cover of the popular young s’ fashion magazine Seen. “You is IN,” said Wang Lihu...
【判断题】断路器是指具有接通和分断电路作用,能提供短路、过负荷和失压保护的低压开关设备。
A.
正确
B.
错误
【单选题】关于油脂制取,说法错误的是
A.
动物油脂通过熬炼脂肪酶、氧化酶大部分被破坏
B.
植物油通过热榨方法,出油率高、杂质少,蛋白质变性严重
C.
植物油浸出法制取的缺点之一是有一定的溶剂残留
D.
植物油超临界流体萃取法的特点是优质,但生产条件要求高,难推广
E.
水溶剂法一般用来制取小磨麻油
【简答题】完形填空。 Yang Mi, born in Beijing on September 12, 1986, is a Chinese mainland actress. At the age of 4, she got her first TV drama role; at 16, she became a model for a fashion magazine; at 18, she went...
【单选题】Confucius Institute is devoted to______ Chinese and Chinese culture, promoting cultural exchanges and mutual understanding between China and the West.
A.
teaching
B.
popularizing
C.
learning
D.
praising
【简答题】系统误差和偶然误差有什么不同?在测量工作中对这两种误差应如何处理?
【单选题】下列哪一项不是水生植物的特点?
A.
发达的通气组织
B.
机械组织发达
C.
水下叶片很薄
D.
水下叶片多分裂成带状、线状
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