[单选题]4.The offer curve of a nation bulges toward the axis measuring the nations
A.A.import commodity
B.B.export commodity
C.C.export or import commodity
D.D.nontraded commodity

[单选题]4.The offer curve of a nation bulges toward the axis measuring the nations
A.A.import commodity
B.B.export commodity
C.C.export or import commodity
D.D.nontraded commodity

[单选题]3.The offer curve of a nation shows:
A.A.the supply of a nation's imports
B.B.the demand for a nation's exports
C.C.the trade partner's demand for imports and supply of exports
D.D.the nation's demand for imports and supply of exports

[填空题]measurement（ ） power curve（ ） hot（ ）

[简答题]Power Curve That the wind turbine output power and speed of response curve . If the impeller diameter D=70m, power factor Cp = 0.5, mechanical efficiency ηt = 95 percent, generating efficiency ηg =92percent, air density ρ=1.29kg/m3 wind speed v=12m/s Calculate the power curve.P=ωCpηtηg

[填空题]toward(s)50

[填空题]offer39

[单选题]You are comparing two annuities that offer regular payments of $2,500 for five years and pay .75 percent interest per month. You will purchase one of these today with a single lump sum payment. Annuity A will pay you monthly, starting today, while annuity B will pay monthly, starting one month from today. Which one of the following statements is correct concerning these two annuities?
A. These annuities have equal present values but unequal future values.
B. These two annuities have both equal present and equal future values.
C. Annuity B is an annuity due.
D. Annuity A has a smaller future value than annuity B
E. Annuity B has a smaller present value than annuity A
Difficulty: 1 Easy
Topic: Annuities
Learning Objective: 06-01 Determine the future and present value of investments with multiple cash flows.

[判断题]It is impolite to offer an Arab anything other than by the right hand.
A.正确
B.错误

[单选题]DHCP中不同的报文类型实现了不同的功能,其中DHCP OFFER报文的作用是?
A.由客户端广播来查找可用的服务器
B.服务器用来响应客户端的DHCP DISCOVER报文,并指定相应的配置参数
C.由客户端发送给服务器来请求配置参数或者请求配置确认或者续借租期
D.由服务器发往客户端,且该报文中的配置参数包括IP地址等信息

[判断题] 在危险爆炸气体环境中,可燃气体危险程度顺序是T6T5T4T3T2T,IICIIBIIA,IIA级,T组可燃气对设备要求最严格。
A.正确
B.错误

[单选题] 锉刀用碳素工具钢T10A,T12A或T10,T12,T13制成,并经过热处理淬硬,锉刀的硬度( )之间。
A.HRC57~62
B.HRC62~67
C.HRC67~77
D.HRC62~77

[单选题]货物停留时间有：t货、t 货车、t一次、t双重、t无调、t中，中间站主要分析( )。　　　
A.t货
B.t中
C.t货车
D.t有调　　　

[单选题]货物停留时间有：t货、t 货车、t一次、t双重、t无调、t中，编组站主要分析( )。　　
A.t货
B.t无调
C.t货车
D.t有调　　　

[单选题]货物停留时间有：t货、t 货车、t一次、t双重、t无调、t中，货运站主要分析( )。　　
A.t货
B.t中
C.t货车
D.t有调　　

[单选题]
已知调制信号m(t)=cos(100Πt)+cos(300Πt)，
载波为cos(800Πt)，进行抑制载波双边带调幅
（DSB-SC）调制。则已调信号的带宽为（）
A.150Hz
B.300Hz。
C.300πHz。
D.400Hz。

[单选题]设有3个作业，它们同时到达，运行时间分别为T1、T2和T3,且T1≤T2≤T3，若它们在单处理机系统中按单道运行，采用短作业优先调度算法，则平均周转时间为（ ）。
A.T1+T2+T3
B.(T1+T2+T3)/3
C.T1+T2/3+2*T3/3
D.T3/3+2*T2/3+T1

[单选题]主被叫都支持Precondition，主被叫都不需要资源预留，主叫给出offer后，被叫在____中给出answer.
A.183 PRACK
B.UPDATE
C.100 TRING
D.200 OK