百合固金汤与贝母瓜蒌散组成中均含有的药物是()
A.神曲
B.桔梗
C.莱菔子
D.百合
E.苏子
参考答案:B
设f"(x)<0,f(0)=0.证明对任何x1>0,x2>0,有f(x1+x2)<f(x1)+f(x2).
Lines or gear NOT in use should be().
A.conspicuously marked
B.stowed anywhere
C.left on deck
D.secured or stowed out of the way