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【单选题】
引起世界性流感大流行的病原体是A.
流感杆菌
B.
甲型流感病毒
C.
乙型流感病毒
D.
丙型流感病毒
E.
以上都不是
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举一反三
【简答题】c____ a.1.given free for people 免费赠送的 2.saying that youadmire sb. or sth. 赞美的;钦佩的
【单选题】In the figure given below, we see an expansion of the production-possibility curve (from PPC 1 to PPC 2 ). The two goods produced are wheat and cloth, which are land-intensive and labor-intensive resp...
A.
B.
C.
D.
D
【简答题】Each of the statements below is followed by four alternative answers. Choose the one that would best complete the statement. 1). A word is _______ of a language that has a given sound and meanin...
【单选题】锥形轴和轮毂之间的键连接常用 ________ 。 ( ) A . 花键连接 B . 半圆键连接 C . 平键连接 D . 楔键连接
A.
1
B.
2
C.
3
D.
4
【多选题】Fill in the blanks with the words given in the box. A.accumulated B. amount C. applies D. benefit E. deposit F. discount G. entitles H. multiple I. preference J. purchase 1. Due to these restrictions...
A.
F
B.
D
C.
J
D.
G
E.
H
F.
A
G.
I
H.
B
I.
E
J.
C
【单选题】In the figure given below AB is the production-possibility curve of Canada. In the absence of trade, the price ratio is 1 bushel of wheat/bale of cotton as shown by the line PQ. The international pric...
A.
a. a. 40 bushels of wheat.
B.
b. b. 20 bushels of wheat.
C.
c. c. 30 bales of cotton.
D.
d. d. 60 bales of cotton.
【单选题】In the figure given below AB is the production-possibility curve of Canada. In the absence of trade, the price ratio is 1 bushel of wheat/bale of cotton as shown by the line PQ. The international pric...
A.
a. produce at point S 1 and consume at point C 1 .
B.
b. produce and consume at point C 0.
C.
c. produce at point S 1 and consume at point C 0.
D.
d. produce and consume at point C1.
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