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【单选题】
若有向图的邻接矩阵中，主对角线以下元素均为零，则该图的拓扑有序序列()。A.
存在
B.
不存在
C.
不一定存在
D.
可能不存在
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反馈参考答案：
举一反三
【单选题】Who was the woman, who bore William Wordsworth an illegitimate daughter, Caroline, in December, 1792?
A.
Katherine Wordsworth.
B.
Annette Vallon.
C.
Dorothy Wordsworth.
D.
Mary Hutchinson.
【单选题】Who is Karl Black?
A.
He is the man's daughter's boyfriend.
B.
He is the woman's daughter's boyfriend.
C.
He is Miss Zhang's boyfriend.
【单选题】--- It was my daughter Linda and his daughter Jane who did it. --- That was why I blamed you as much as _____.
A.
he
B.
him
C.
his
D.
she
【单选题】患者，32岁。人流后1年，近日咳嗽，咳血丝痰，肺片示肺多个结节影，血HCG定量明显升高，诊断：绒癌肺转移，下步治疗为
A.
理疗
B.
抗炎
C.
肺叶切除
D.
放疗
E.
化疗
【单选题】患者，32岁。人流后1年，近日咳嗽，咳血丝痰，肺部X线片示肺多个结节影，血HCG定量明显升高，诊断：绒癌肺转移，下步治疗为
A.
理疗
B.
抗炎
C.
肺叶切除
D.
放疗
E.
化疗
【简答题】A．girl who was in financial problems. B．Robert Spring's daughter. C．The only daughter of General 'Stonewall' Jackson. D．An imaginary person created by Spring.
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