叶片脱落与生长素有关,把生长素施于离区的近基一侧,则会()
A.加速脱落
B.抑制脱落
C.无影响
参考答案:B
After walking a whole day, I was almost________, not feeling bad, though.
A.out of shape
B.out of breath
C.out of control
D.out of order
属于液体样品的采样工具是()。
A.导管
B.双套取样管
C.取样钻
D.石油液化气采样钢瓶