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【单选题】
What happens to us or what we do today will probably ______.A.
become the contents of our dreams
B.
have nothing in common with the contents of our dreams
C.
appear in our dreams just like the same in real life
D.
appear in our dreams usually in the opposite way
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【判断题】The average daily consumption of Phosphorus by adults is 1,200 to 1,600 milligram.
A.
正确
B.
错误
【判断题】The average daily consumption of Phosphorus by adults is 1,200 to 1,600 milligram.
A.
正确
B.
错误
【单选题】600 out of 800 rooms have already been booked, and the revenue for the day is 72000 dollars, what is the average daily rate?
A.
90 dollars
B.
480 dollars
C.
120 dollars
D.
60 dollars
【单选题】压力容器用钢的基本要求是有较高的强度，良好的塑性、韧性、制造性能和与介质相容性，硫和磷是钢中最有害的元素，我国压力容器对硫和磷含量控制在()以下。
A.
0.2%和0.3%;
B.
0.02%和0.03%;
C.
2%和3%;
D.
0.002%和0.003%。
【简答题】放大电路如图所示，试图中所有电容对交流信号的容抗近似为零，试画出各电路的直流通路、交流通路和小信号等效电路。
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