She got to know the young man very well ______ she had worked for so long.
A) to whom B) in whom C) whom D) with whom
第1题
我国钢轨的标准长度有()m和25.0m两种。
A.12.5
B.13.5
C.11.5
D.15.5
第8题
目前我国60kg/m标准钢轨的长度有()两种。
A.4.5m和6m
B.6m和12.5m
C.12.5m和25m
D.6m和25m
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