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【多选题】
导热问题的数值解是近似的,下面哪些措施有助于提高解的精度?A.
以上措施都无效
B.
采用更的离散方式
C.
尽量提高网格的正交性
D.
网格步长和时间步长越小越好
拍照语音搜题，微信中搜索"皮皮学"使用
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】_____ is difficult if you set your mind _____ it.
A.
Everything, to
B.
Everything, on
C.
Nothing, on
D.
Nothing, with
【简答题】欺骗,v.
【单选题】What ______ will it ______ whether you are a boy or a girl? As long as you set your mind to it, nothing can be difficult.
A.
differences, tell
B.
sense, make
C.
difference, make
D.
use, make
【简答题】I'm the type of guy who believes you can achieve anything you set your mind to, if you give it your all and don't give up. , when I decided to write a novel, it didn't matter to me that I had never do...
【单选题】Nothing in the world is _____ if you set your mind to do it. [ ]
A.
impossible
B.
wonderful
C.
interesting
D.
necessary
【单选题】The fierce looking horse is in fact very tame and you can set your mind at ease when you ride it.
A.
shy
B.
timid
C.
spirited
D.
obedient
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