胆管癌最主要的表现是()
A.腹痛
B.梗阻性黄疸
C.消瘦
D.贫血
E.肝大
参考答案:B
解析:胆管癌主要表现为进行性加重的梗阻性黄疸,少数患者黄疸可有波动。
---Do you have any news about Bob?
---Yeah. We ______ each other quite a lot recently.[ ]
A. have been seeing
B. had been seeing
C. see
D. have seen
重沸器中,走壳程的是()。
A.蒸汽
B.净化水
C.凝结水
D.都不是