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【单选题】
It was____I met Mr.Green in Shanghai.A.
ten years since
B.
five years
C.
two months when
D.
many years ago that
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【简答题】在RLC串联正弦交流电路中,当频率为f时发生谐振,当电源频率变为3f时,电路呈 性。
【单选题】I'd like to _this old car for a new model huL J'rn afraid I cannot afford it.
A.
exchange
B.
convert
C.
replace
D.
substitute
【简答题】More than two decades ago, a 10-year-old schoolgirl threw a bottle into the sea off the coast of Hull as she went on a ship on a family holiday, hoping to get a response from a stranger in a faraway l...
【单选题】城市历史景观的英文缩写为HUL,其英文全称是
A.
Historic Unbroken Landscape
B.
Historical Unbroken Land
C.
Historical Urban Landscape
D.
Historic Urban Landscape
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