标距的定义是()用的试样圆柱或棱柱部分的长度。
A.测量抗拉强度
B.测量屈服强度
C.测量伸长
D.冷弯
参考答案:C
— Listen! There is a strange noise over there.
— There _____ some dangerous animals. Let's run away. [ ]
A. will be
B. could have
C. will have
D. might be
相同处理量,加工轻质原油时常、减压炉负荷比加工重质原油时要小。