A.
B.
C.
D.
[单选题]A.丙酮酸B.苹果酸C.异柠檬酸D.磷酸甘油
[单选题]A.a=-2,b=2B.a=2,b=-2C.a=-1,b=1D.a=1,b=-1
[单选题]A.a=-2,b=2B.a=2,b=-2C.a=-1,b=1D.a=1,b=-1
[单选题]A.a=-2,b=2B.a=2,b=-2C.a=-1,b=1D.a=1,b=-1
[单选题]A.a=-2,b=2B.a=2,b=-2C.a=-1,b=1D.a=1,b=-1
[单选题]A.丙酮酸B.苹果酸C.异柠檬酸D.磷酸甘油