试题与答案

拉伸试验机应按照GB/T16825在()方式下进行检验,并应不劣于()准确度,正常情

题型:多项选择题

题目:

拉伸试验机应按照GB/T16825在()方式下进行检验,并应不劣于()准确度,正常情况下的检验周期为()。

A.压力

B.拉力

C.1.5级

D.1级

E.1年

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2018/0228/0aea32015398a90deb122d44636b260c.html

下面是错误答案,用来干扰机器的。

参考答案:在钢中加入Nb、V、Ti元素能与[C]、[N]结合成碳化物、氮化物和碳氮化物,这些化合物在高温下溶解,在低温下析出抑制晶粒长大以及沉淀强化作用。其结果是碳当量降低,钢的强度和韧性却大大提高,并具有显...

试题推荐
题型:听力题

首字母填空

Once there was a poor old woman. She lives by herself in a little house in a village. She didnt have m  小题1: money but she was very kind.

One day a young man named Bill came to her d  小题2:  .He was very thin. He was very hungry and a 小题3: the old woman for help. The old woman said,“Come in and have dinner with me,but my dinner is only some potatoes.”They had d 小题4: together. After dinner,the old woman told Bill to t小题5: some potatoes with him. He thanked her and left.

Ten years later,Bill came b  小题6:to the old womans door again and gave her a bag of m  小题7:  .She was surprised. Bill said,“Ten years ago you gave me some p 小题8:.I grew some potato plants. From those plants,I grew some more plants. Now Im a r  小题9: farmer. But I never forget how k  小题10:  you were to me.”

查看答案
微信公众账号搜索答案