铁工务（1995）144号文件规定：钢轨接头探伤应执行，一看波形显示，二看探头位置，三看（）。
参考答案：接头状态
联合促销的主要形式有产品或服务互补型和（）。
Affected by the financial crisis, Jack's business is not as good as before, so he has to ________ the expenses of his company.
A．cut off
B．cut away
C．cut up
D．cut down
