通常用（）把测井打捞筒和钻具连接在一起。
A、上接头
B、筒体
C、引斜
D、卡瓦
参考答案：A
Since our country has so many good table tennis players,we have to ________ the best ones to take part
in the game.[ ]
A. rely on
B. depend on
C. judge on
D. decide on
