储量综合评价按哪几个方面进行？
参考答案：
按产能大小；按地质储量丰度；按油气田地质储量大小；按油气藏埋藏深度。
— You speak French so well. How long have you learned it?
— ________ I was fifteen.
A．Until
B．Since
C．When
D．Before
体内维生素B1缺乏，TPP效应是（）
A.<15％
B.>16％
C.<12％
D.>25％
E.>18％
