能够指示血液样本中pH值大小的电极是（）。
A.铂电极
B.玻璃电极
C.银-氯化银电极
D.甘汞电极
E.饱和甘汞电极
参考答案：B
Sometimes I cannot but wonder ______ that has made me feel differently from the others.
[ ]
A. how is it
B. what is it
C. how it is
D. what it is
血清中直径最大的脂蛋白是（）。
A.VLDL
B.CM
C.HDL
D.IDL
E.LDL
