肝内胆管结石多为()
A.胆固醇
B.胆色素结石
C.泥沙样结石
D.以胆色素为主的混合结石
E.以胆固醇为主的混合结石
参考答案:B
I've decided to go to London next weekend. I was wondering _______ you could go with me. [ ]
A. if
B. when
C. that
D. where
加氢精制反应温度升高,将使反应深度()
A、不变
B、增加
C、减少
D、无法确定