角焊缝比对接焊缝横向收缩量要小。()
参考答案:错
What a low opinion she ___ of him! He doesn't think it much good ___ friends with her. [ ]
A. thinks, to make
B. has, making
C. thinks , making
D. has, to make
下列关于设备更新原则的论述,不正确的是( )。
A.不考虑沉没成本
B.按照新、旧设备方案的直接现金流量比较
C.对原设备目前的价值应考虑买卖双方及机会成本,并使之均衡
D.逐年滚动比较