In some parts of the electricity grid, HVDC (high voltage direct current) is replacing HVAC (high voltage alternating current). Which of the following is NOT an advantage of HVDC in comparison with HVAC?
A.
Transmission losses are reduced
B.
Installation costs are reduced
C.
The area of land needed is reduced
D.
Fewer conductors are needed.
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【单选题】She is only a child, so there is no need ______ her so much stress. A. give B. to giving C. to give