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【简答题】
把下列各式因式分 (1)x 3 y-6x 2 y 2 +9xy 3 (2)m 2 (x-y)+n 2 (y-x)
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【单选题】反刍动物的瘤胃消化属于( )
A.
物理消化
B.
化学消化
C.
微生物消化
D.
以上都不是
【单选题】消化的方式有三种,其中消化过程中,属于化学性消化的是()。
A.
瘤胃内微生物的作用
B.
大肠内微生物的作用
C.
小肠运动
D.
反刍
E.
消化液中酶对饲料的分解
【单选题】________ information! I hear you have finished writing a ________ report.
A.
What an excited; seven thousand word’s
B.
What excited; seven thousand words
C.
What an exciting; seven-thousand-word
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【单选题】听力原文:I signed up for a two-month-long course in writing, but Kate signed up for one that's only four weeks long. (26)
A.
Kate's course is only half as long as mine.
B.
Kate is enrolled in 4 courses.
C.
I signed a contract and went to work for two months.
D.
Kate signed a longer contract than I.
【单选题】March 16th, 2009 Dear Sir, In (141) with my agreement with your firm, I am writing to giving you formal notice of the termination of my service with you one month from now. The health of my wife makes...
A.
according
B.
accordance
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account
D.
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【单选题】左前斜位心影后缘下部的投影式()
A.
左心房
B.
左心室
C.
右心房
D.
右心室
E.
右心房与右心室
【单选题】下列属于反刍动物特有现象的是。
A.
胃肠运动
B.
咀嚼。
C.
瘤胃氮素循环。
D.
微生物消化
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