皮皮学，免费搜题
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【单选题】
原子吸收分光光度计中光源的作用是
A.
提供试样蒸发和激发所需要的能量
B.
发射连续光谱
C.
发射具有足够强度的散射光
D.
发射待测元素的特征谱线
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【判断题】复函开头的写法，一般先要引用对方来函的标题、发文字号，有的复函还可以简述来函的主题。
A.
正确
B.
错误
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【单选题】In 1846 Whitman became editor of the__________,a fairly important newspaper of the time.
A.
Long-Islander
B.
Brooklyn Daily Eagle
C.
Daily Crescent
D.
Weekly Freeman
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【单选题】The eagle became the national ________ of the country when the American leaders approved the design of the Great Seal of the United States.
A.
symbol
B.
signal
C.
feature
D.
characteristics
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【简答题】Read the text. Golden Opportunity 1 A world record was broken in July 2002, when a coin was auctioned in New York City for 7.6 million dollars. This particular 1933 double eagle became the most expens...
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【单选题】（）协议用于将电子邮件交付给Internet上的邮件服务器
A.
POP3
B.
ICMP
C.
PPP
D.
SMTP
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【判断题】第一语言是语言学的概念,母语更多的牵涉到民族学问题。()
A.
正确
B.
错误
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【单选题】According to paragraph 6, how did peregrine falcons and bald eagles became endangered?
A.
Predatory birds began eating the eggs of falcons and eagles.
B.
The use of DDT reduced the amount of food available in the falcon and eagle habitat.
C.
Falcons and eagles could no longer find materials to build their nests when the use of DDT was discontinued.
D.
Falcons and eagles that had consumed food containing DDT laid eggs with defective shells.
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【判断题】当干气团的气温直减率小于周围空气时,对该空气团而言,大气处于不稳定状态。( )
A.
正确
B.
错误
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【多选题】以下属于国防要素的有()
A.
政治
B.
科技
C.
军事
D.
自然
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【单选题】( )协议用于将电子邮件交付给Internet上的邮件服务器
A.
SMTP
B.
POP3
C.
UDP
D.
PPP
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【判断题】复函开头的写法，一般先要引用对方来函的标题、发文字号，有的复函还可以简述来函的主题。
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【单选题】In 1846 Whitman became editor of the__________,a fairly important newspaper of the time.
A.
Long-Islander
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【单选题】The eagle became the national ________ of the country when the American leaders approved the design of the Great Seal of the United States.
A.
symbol
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【简答题】Read the text. Golden Opportunity 1 A world record was broken in July 2002, when a coin was auctioned in New York City for 7.6 million dollars. This particular 1933 double eagle became the most expens...
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【单选题】（）协议用于将电子邮件交付给Internet上的邮件服务器
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【判断题】第一语言是语言学的概念,母语更多的牵涉到民族学问题。()
A.
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B.
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【单选题】According to paragraph 6, how did peregrine falcons and bald eagles became endangered?
A.
Predatory birds began eating the eggs of falcons and eagles.
B.
The use of DDT reduced the amount of food available in the falcon and eagle habitat.
C.
Falcons and eagles could no longer find materials to build their nests when the use of DDT was discontinued.
D.
Falcons and eagles that had consumed food containing DDT laid eggs with defective shells.
查看完整题目与答案
【判断题】当干气团的气温直减率小于周围空气时,对该空气团而言,大气处于不稳定状态。( )
A.
正确
B.
错误
查看完整题目与答案
【多选题】以下属于国防要素的有()
A.
政治
B.
科技
C.
军事
D.
自然
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【单选题】( )协议用于将电子邮件交付给Internet上的邮件服务器
A.
SMTP
B.
POP3
C.
UDP
D.
PPP
查看完整题目与答案