下列各项中，互为逆运算的是（） ["年金终值与年金现值","年金终值与年偿债基金","年金现值与年等额资本回收额","复利终值与复利现值"]
销售渠道成员选择标准中的（）。
The end of the joint with the exterior threads is called the（）. ["pin","stem","box","stand"]
从逻辑功能上来划分，可以将计算机网络划分为（）。 ["公用网","资源子网","通信子网","有线网络","无线网络"]
EI32-JD计算机联锁系统联锁计算机，两套共（）个CPU构成二乘二取二容错系统。 ["2","4","6","8"]
简述怎样测量炭化室炉墙温度？
