县农业局可以对生产、销售的农产品进行现场检查，对经检测不符合农产品质量安全标准的农产品，有权查封、扣押。
参考答案：对
I don’t become a serious climber until the fifth grade, ______ I went up to rescue a kite that was stuck in the branches of a tree.
A．when
B．where
C．which
D．why
骶管阻滞时，最常见的并发症是（）。
A.损伤脊髓
B.全脊麻
C.穿刺针进入盆腔
D.血肿形成
E.穿刺失败
