【简答题】翻译下列句子: 1. What's the weather like there? 2. What do you think of the weather here? 3. What does the weatherman say? 4. Hot day, isn't it? 5. The heat is killing me. I feel like swimming.
【多选题】根据所给Pb-Sn相图,已知以Pb为基体形成α固溶体,以Sn为基体形成β固溶体,假设10%Sn合金在成分轴上的投影点为H,Sn在Pb中固溶度为G点,Pb在Sn中固溶度为F点。关于合金组织和相及相图成立的有( )。【图片】
A.
合金的平衡凝固过程后室温下的相组成为α相+β相,其室温的相组成百分含量表达式为α%=(FH/GF) x100%,β%=100%-α%
B.
合金平衡凝固过程后室温下的组织组成为:α相+β次晶
C.
合金室温的组织组成百分含量表达式为α%=(FH/GF) x100%,β%=100%-α%,其组成含量与相组成含量相同
D.
通过绘制低于共晶温度下某一温度的自由能成分曲线,利用公切线法则可以得出AM和SN的延长线必须分别进入两相(α+β),不能进入单相区(α或β), 只有进入相邻两相区,体系自由能才能最低,体系才稳定
【单选题】一个字节(Byte)由几位(bit)二进制数字组成
【简答题】选择合适的选项写在横线上,将下列的对话补充完整。 1. A: It is a hot day, isn't it? B: Yes, it is. It's really hot. A: I am going to _________ (go swimming, go swim)this afternoon. ________ (Would, Could)you like to go with me...
【简答题】Hot day, isn't it?A. Me,
too. B. How
about you? C. What
is it? D. Yes,
it is.