创业机会的社会属性在很大程度上决定了创业者对其未来价值的预期，因而对创业者的机会识别和评估产生了重大影响。
参考答案：对
----The teacher didn’t realize you had cheated in the exam.
----Well, _____!
A．what a relief
B．with great pleasure
C．no chance
D．that’s fine with me
钎焊和熔焊最本质的区别是什么？钎焊根据什么而分类？
