钢轨轨端淬火最后得到组织为（）。
A.珠光体
B.马氏体
C.索氏体
D.铁素体
参考答案：B
实施调测阶段需要严格按照（）、测试指导手册等资料开展调测工作。
A.工程调试指导手册
B.工程竣工资料
C.开通测试记录
D.工程质量报告
Instead of calling ________ his uncle, he called ________ my new house with his wife that day.
A．by; for
B．on; at
C．for; on
D．at; by
