【单选题】已知 a 与 b 均为单位向量,其夹角为θ,有下列四个命题P 1 :| a + b |>1?θ∈[0, 2π 3 );P 2 :| a + b |>1?θ∈( 2π 3 ,π];P 3 :| a - b |>1?θ∈[0, π 3 );P 4 :| a - b |>1?θ∈( π 3 ,π];其中的真命题是( )
【简答题】掉期交易 A :GBP O/N SWAP GBP 5 MIO PLS B :GBP O/N 4/3 A :4 PLS MY USD TO A NY MY GBP TO A LONDON B :OK DONE WE S/B GBP 5MIO AG USD MAY 18/MAY 19 RATE AT 1.8234 AG ( ) USD TO MY B NY GBP TO MY B LOND...