临床诊断脊柱结核，下列哪项最有价值
A．局部疼痛
B．穿刺液送结核培养
C．X线拍片
D．结核菌素试验
E．消瘦、贫血、盗汗、食欲减退
参考答案：C
Look at the new words. Please ______ in your notebook.
A．write it down
B．write down it
C．write them down
D．write down them
如果桥式起重机主梁腹板呈波浪形，应如何进行修理？
