• 2022-05-27
    设曲线积分[tex=8.357x2.214]Nbc4Nd6TNS9j77Nv8aq8yZNj/dON5Fis7JxARUKuox4c85i/ERkV+q/swLSbuy3n[/tex][tex=8.143x1.286]rFlVw18u1ESf+66Jd3YHC1yCl8cPs5wzEwDidrEwUmz8yY9ozHEUvYElpGhGExaj[/tex]与路径无关,则[tex=1.571x1.286]56+0njcfj+UDKlhzk+1Nrw==[/tex][input=type:blank,size:6][/input] .
    A: 1
    B: 2
    C: 3
    D: 4