重症胰腺炎化验检查可出现()
A.CA199显著升高
B.血浆VIP(血管活性肠肽)水平升高
C.CT可见胰腺占位性改变
D.抗中性粒细胞胞质抗体阳性
E.低钙血症
参考答案:E
------ There is still a copy of the book in the library. Will you go and borrow_______ ?
----No,I’d rather buy in the bookstore.
A.it; one
B.one; one
C.one; it
D.it; it
锅炉按其功用不同可分为哪几类?