由阀门全开的条件算出在要求流量为Q时所需扬程为He，在离心泵的性能曲线上查得与Q对应的扬程为H，H>He，在流量为Q时泵的效率为η，则泵的轴功率N为（）。
消防车水泵的出口压力可按(HB=h+hd+H1-2)÷he进行计算，其中h表示水枪喷嘴直径。
he following conversation clearly violates the_____ . A: How do you finally go to school? B: The bus is so fast so I got to school very early.
所有H，He以外的重元素在铁之前的来自于哪里（）？
2.How many aspects of the differences are mentioned in the conversation?
Conversation 2 17. A. A day off. B. A paid rise. C. A new position. D. A paid holiday.
宇宙、地球和地壳中含量最高的元素的分别是He、H、O。
恒星内部的热核反应只有“H→He聚变”这一个层级。( )
所有H，He以外的重元素在铁之前的来自于哪里？
In our conversation with Bob Bjork, he described the various metaphors for how the mind works. Which one was the most accurate according to Bjork?Bob Bjork在和我们的对话中描述了大脑工作机制的多种比喻。Bjork认为哪种是最贴近的？
Conversation 2 (4分) （5.0分）
有以下程序： include＜stdio.h＞ struct tt {int x；struct tt*y;}*p； struct tt a[4]={20,a+1,15,a+2,30,a+3,17,a} main() { int i； p=a； for(i=1;i＜=2;i++){printf("%d",p-＞x)；p=P-＞y;} } 程序的运行结果是()。
2 We had a long conversation about her parents.
You will hear eight short conversations. after each conversation there will be a question. Please listen carefully and choose the best answer. conversation1 for question1-2,conversation2for question3-
19．H<sub>2</sub>(g)和He(g)的下列性质中相同的是( )。
图2.17（a)所示的为TTIL门电路,图2.17（b)所示的为CMOS门电路,试根据图2.17（c)中给出的输入A、B
H e told me that he had lived in America for ten years before he came to China.英译汉
UNIT 2 PAGE 24 CONVERSATION 2.1
求0℃时氦气（He)和氢气（H<sub>2</sub>)的摩尔内能？
David Bravoria, CFA, is an independent financial advisor for a high net worth client with whom he had not had contact in over two years. During a recent brief telephone conversation, the client states
quiz-conversation2.ppt Questions 12 to 15 are based on the conversation you have just heard. 12. What is the most probable relationship between the two speakers？
unit one conversation1 2.unit one conversation1
1、1. 假定（A)=83H，（R0)=17H，（17H)=34H，执行以下指令后，（A)= 。 ANL A，17H ORL 17H，A XRL A，@R0 CPL A
UNIT 3 PAGE 40 CONVERSATION 2.1
