题目内容
(请给出正确答案)
[单选题]
设平面曲线为下半圆,则曲线积分的值为() .
A.
B.
C.
D.
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第2题
把函数在[-1,1]上展成余弦级数,利用所得的傅立叶级数,求得级数和为
A、
B、
C、
D、
E、
F、
G、
H、
I、
J、1
第3题
第7题
A、Greenfield investments are characterized by reduced management control
B、Mergers and acquisitions are preferred because most greenfield investments fail.
C、Mergers and acquisitions are quicker to execute than greenfield investments.
D、It is easier and less risky for a firm to build strategic assets than acquire similar assets.
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