水产动物寄生虫对宿主的作用描述不正确的是（）
A.机械性剌激损伤
B.夺取营养
C.毒素作用
D.泛池
参考答案：D
— Father, you promised !
— Well,_____ . But it was you who didn't keep your word first. [ ]
A. so was I
B. so did I
C. so I was
D. so I did
设BL=05H，要使结果BL=0AH，应执行的指令是( )。
A．NOT BL
B．AND BL
C．XOR BL,0FH
D．OR BL,0FH
