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【简答题】
简述突发性公共卫生事件的定义、特点、分类、分级。
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举一反三
【简答题】p____ n. 平行线;可相比拟的事物
【单选题】According to Paragraphs 5 and 6, which of the following is INCORRECT?
A.
The gold rushes brought about more opportunities for crimes.
B.
Banks gained their prosperity in frontier towns after 1849.
C.
After the Civil War, thieves turned to steal cattle and horses.
D.
In Texas, cattlemen had to fight for the access to land and water.
【简答题】头孢西丁胶囊, 0. 5 克/粒, 12 粒/盒的商品编码( )
【单选题】In Paragraphs 5 and 6, the author shows his concern that
A.
principles are hard to be clearly expressed.
B.
the court is giving police less room for action.
C.
phones are used to store sensitive information.
D.
citizens' privacy is not effectively protected.
【单选题】某种 元素化合价在化学反应前后发生了变化，则该反应为氧化还原反应．据此可判断下列化学反应属于氧化还原反应的有（ ）
A.
ZnO+H 2 SO 4 =ZnSO 4 +H 2 O
B.
Fe 2 O 3 +3CO 高温 . 2Fe+3CO 2
C.
Na 2 CO 3 +2HCl=2NaCl+H 2 O+CO 2 ↑
D.
CaCO 3 高温 . +CO 2 ↑
【简答题】读下面地理景观模式示意图，AB 表示昏线，H1 和H2 分别代表当地对流层的高度，此时南极圈以内全部出现极昼现象，回答后面问题。 （1）此时 a 角的度数 。北京时间是 。 （2）A、B两地对流层H1和H2厚薄关系是 。 （3）海洋C处此时气压中心的性质是 ，简述其成因 、 。 （4）D处气候特点是 。 （5）M应属于地球圈层中的
【单选题】According to paragraphs 5 and 6, one disadvantage very young children face in processing information is that they cannot
A.
process a lot of information at one time
B.
organize experiences according to type
C.
block out interruptions
D.
interpret the tone of language
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