典型苯丙酮尿症的发病原因是()。
A.酪氨酸转氨酶缺乏
B.苯丙酸转氨酶缺乏
C.苯丙氨酸羟化酶缺乏
D.酪氨酸羟化酶缺乏
E.二氢生物蝶呤还原酶缺乏
参考答案:C
—Is Runyang Bridge open to the public yet?
—Yes. It for almost one and a half months.[ ]
A. has opened
B. has being opened
C. has been open
D. was open
处方中“O.D”是指
A.生理盐水
B.蒸馏水
C.双眼
D.左眼
E.右眼