缩径
参考答案:
井眼因井壁岩石膨胀等而使井径变小的现象。
The website can _______ you with the information that you want.
A.pack
B.spend
C.provide
D.offer
可传递抑制信号的是()
A.KIR2DL
B.NKp46
C.TCR
D.MBL
E.CEA