泼尼松的特点是()
A.肾性贫血
B.同化激素
C.血容量扩充药
D.乳酸血症
E.经肝脏氢化后才具有活性
参考答案:E
─Are you going to plant a great many trees in this area?
─Yes. The soil _________ away in this way.
A.doesn’t wash
B.won’t wash
C.isn’t washed
D.won’t be washed
在来料加工和补偿贸易中常使用()
A.循环信用证
B.对开信用证
C.对背信用证
D.预支信用证