[*]对非稳态导热问题显式差分格式离散方程组求解，计算的稳定条件是 A: Fo>1/2 B: Fo≤1/2 C: Fo<1/4 D: 无条件稳定

[*]对非稳态导热问题隐式差分格式离散方程组求解，计算的稳定条件是 A: Fo>1/2 B: Fo<1/2 C: Fo<1/4 D: 无条件稳定

对于非稳态导热问题，在什么情况下可以首选数值计算方法进行计算？ A: Bi<0.1 B: Bi>0.1且Fo<=0.0625 C: Bi>0.1且Fo>0.2 D: Bi>0.1且0.0625<Fo<0.2

The Chinese people love peace, __________ peace and are ready to fight for peace. A: ask fo B: long fo C: seek fo D: take fo

Juliet is new at this job, but her enthusiasm can make up for her lack of skill. A: call fo B: un fo C: opt fo D: compensate fo

Jack has been out of work for a long time,so he wants to _____ a job in this factory. A: care fo B: apply fo C: wait fo D: prepare fo

LC组成一个串联谐振回路，谐振频率为fo，把它接在串联回路中，最易通过的信号频率是 A: fo B: 大于fo C: 小于fo D: 不为fo

_________ the clouds, you would find the airplane in the sky easily. A: Had it not been fo B: If it were not C: If it had not been fo D: Were it not fo

以下文件操作方法,打开后能读取CSV格式文件的选项是:() A: fo = open("123.csv","a") B: fo = open("123.csv","w") C: fo = open("123.csv","x") D: fo = open("123.csv","r")

以下文件操作方法，打开后能读取 CSV 格式文件的选项是：‪‬‪‬‪‬‪‬‪‬‮‬‪‬‫‬‪‬‪‬‪‬‪‬‪‬‮‬‫‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‮‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‭‬‪‬‪‬‪‬‪‬‪‬‮‬‪‬‪‬ A: fo = open(123.csv,w) B: fo = open(123.csv,x) C: fo = open(123.csv,r) D: fo = open(123.csv,a)