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【判断题】
2017年世界环境日的中国主题是“绿水青山就是金山银山”。判断对错A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】当代教育发展的趋势和特点有哪些?
【简答题】绝望的;孤注一掷的(a.):_____________________________
【单选题】The Fed is an active participant in money markets mainly because of its responsibility to
A.
lower borrowing costs to encourage capital investment.
B.
control the money supply.
C.
increase the interest income of retirees holding money market instruments.
D.
assist the Securities and Exchange Commission in regulating the behavior of other money market participants.
【单选题】The company also embarked on a (desperate) cost cutting program...
A.
绝望的；孤注一掷的；极需要的
B.
荒凉的
C.
缺乏的
【单选题】Time Is Money.pdf Choose among the four alternatives one word or phrase that is closest in meaning to the underlined part in each statement. Time Is Money, Just Figure Out How Much
A.
d epict
B.
discover
C.
clarify
D.
imagine
【简答题】Figure out how each concluding paragraph ends. Choose the proper method.
【判断题】方波信号通过傅里叶级数投影到三角函数集上，有如下展开公式：x(t)=(4*A/pi) * [ sin(2*pi*f*t) + (1/3)*sin(2*pi*3*f*t) + (1/5)*sin(2*pi*5*f*t) +............]因此，我们可以用１,３,５,７,９．．．．次正弦波谐波来合成出方波信号。
A.
正确
B.
错误
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