In Washington, D.C. Philips （）important information about atomic fission from the Library of Congress.
A.正确答案Dexchanged
B.possessed
C.maintained
D.obtained
In Washington, D.C. Philips （）important information about atomic fission from the Library of Congress.
In Washington, D.C. Philips （）important information about atomic fission from the Library of Congress.
A.正确答案Dexchanged
B.possessed
C.maintained
D.obtained
