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【单选题】
好氧性自生固氮菌保护其固氮酶不受氧毒害的机制之一是A.
SOD保护
B.
豆血红蛋白保护
C.
形成异形胞
D.
呼吸保护
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反馈参考答案：
举一反三
【单选题】以下URL中写法正确的是
A.
http://www.microsoft.com\index\html
B.
http://www.microsoft.com/index/html
C.
http://microsoft.com\index.html
D.
http://microsoft.com/index.html
【单选题】— Excuse me, could you tell me where I could make a call? — Sorry, I'm a stranger here. — _____. [ ]
A.
Thanks a lot
B.
Thanks anyway
C.
That's a pity
D.
I'm sorry to hear that
【简答题】短文填词 How far is the sun from the earth? This is really a question ________(引起兴趣) scientists of all times. But they had no way of getting an exact answer.Now with the use of radio telescope, they are ...
【单选题】Space is a dangerous place，not only because of meteors but also because of rays from the sun and other stars．The atmosphere again acts as our protective blanket on earth．Light gets through，and this is...
A.
it supplies the heat necessary for human survival
B.
it provides sufficient light for plant growth
C.
it protects him against the harmful rays from space
D.
it screens off the falling meteors
【单选题】格老秀斯在其 1625 年出版的著作中所提出的 “ 国家主权 ” 这个现代国际法上的基本概念,是荷兰的国际礼让说的重要基础,这部著作题为 ()
A.
《论共和》
B.
《理想国》
C.
《战争与和平法》
D.
《社会契约论》
【简答题】n England, people often talk about the weather because they can experience ( 经历 ) four seasons in one day. In the morning the weather is warm just like in spring. An hour later black clouds come and t...
【单选题】— Excuse me, could you tell me where I could make a call? — Sorry, I’m a stranger here. — ________.
A.
Thanks a lot
B.
That’s a pity
C.
Thanks anyway
D.
I’m sorry to hear it
【单选题】以下URL中写法正确的是( )
A.
http;//www.Microsoft.com\index\html
B.
http;//www.Microsoft.com/index/html
C.
http;//www.Microsoft.com\index.html
D.
http;//www.Microsoft.com/index.html
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