皮皮学，免费搜题
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【多选题】
我国突发公共事件包括:A.
、危险化学品事故
B.
自然灾害
C.
事故灾难
D.
、公共卫生事件
E.
社会安全事件
拍照语音搜题，微信中搜索"皮皮学"使用
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举一反三
【单选题】Which of the following is right about the silk road? ( )
A.
Zhang Qian and BanChao in Han Dynasty set out two journeys to the Western Regions.
B.
The ancient silk road spent its childhood and gradually grew up in Zhou dynasty.
C.
Tang Dynasty saw the silk road rise to its most flourishing period in history.
D.
The ancient silk road declined gradually in the Yuan Dynasty.
【单选题】Based on the figure, a sound of a given frequency will have the highest intensity for which of the following sets of conditions? Sound is passing through； S
A.
water； 100%
B.
water； 010–8%
C.
air； 100%
D.
air； 010–8%
【单选题】Which of the following is right about the silk road? ( )
A.
Zhang Qian and BanChao in Han Dynasty set out two journeys to the Western Regions.
B.
The ancient silk road spent its childhood and gradually grew up in Zhou dynast.
C.
Tang Dynasty saw the silk road rise to its most flourishing period in history.
D.
The ancient silk road declined gradually in the Yuan Dynasty.
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