肠套叠的三大典型症状是
A.腹痛,发热,黄疸
B.腹痛,发热,脓血便
C.腹痛,血便,里急后重
D.腹痛,血便,腹部肿块
E.腹痛,腹部肿块,发热
参考答案:D
_______ on the American Civil War, the book attracted a large number of readers when it was published.
A.Based
B.Basing
C.Having based
D.Being based
分包单位承接的项目应符合相应的()要求。
A.质量
B.技术
C.资质
D.安全