大多数金属材料没有明显的屈服现象。_爱下问搜题

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问题判断题

大多数金属材料没有明显的屈服现象。

答案

参考答案：对

选择题

_____ our national football team lost the game to a weak team as Syria by 2 to 3, I held no doubt about the new coach's ability.

A. Until
B. By the time
C. Unless
D. After

填空题

排卵性月经失调常见 _________ 和 _________ 。