抗凝血灭鼠剂导致人畜中毒时,下列哪种药物是有效解毒剂()
A.阿托品
B.维生素B1
C.维生素C
D.维生素K1
E.维生素A1
参考答案:D
— I wonder _____ you’ll water this kind of flower.
— Every other day.
A.how much
B.how long
C.how soon
D.how often
秸秆还田是应当注意补充()肥,调节C/N比。
A.氮肥
B.磷肥
C.钾肥
D.微肥