促胃液素瘤常起源于()
A.胃体
B.胃窦
C.胰腺
D.十二指肠
E.胆管
参考答案:C, D
Because of my poor memory, all ____ you told me has been forgotten.
A.that
B.which
C.what
D.as
按照JC475-2004标准规定,混凝土防冻剂一等品的减水率应()
A.≥8%
B.≥10%
C.≥12%
D.无规定