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QA QB UUUR UUUR + + 2 QC UUUR R = 0 (1D)
QA QB UUUR UUUR + + 2 QC UUUR R = 0 (1D)
CAU HOI TRAC NHGIEM ON TAP CHUONG I
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Đáp án tham khảo
2/ D?ng di?m Q:
QA QB
uuur uuur + + 2
QC
uuur r = 0
(1d)
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CAU HOI TRAC NHGIEM ON TAP CHUONG I