鹿筋是用（）四肢的筋加工干制而在成。
A.长颈鹿
B.梅花鹿
C.黑鹿
D.马鹿
参考答案：B
—Thank you very much for helping me out of trouble, Bob.
—________.[ ]
A. With pleasure
B. Don't mention it
C. That's right
D. I hope so
公路导线测量中基线长度测量两次，相差不大于1/200时取平均值。（）
