根据题意得:1-2x≥0
解得x≤12
故选C.
. Despite their quarrel, they _______ the best of friends.
A.remained
B.are remaining
C.are remained
D.remaining
奥美拉唑特异性地作用于胃黏膜细胞,降低壁细胞中的()
A.H-Na-ATP酶活性
B.H-K-ACP酶活性
C.Na-K-Ca通道活性
D.H-K-ATP酶活性
E.H-K-AMP酶活性