谐振动是理想条件下的振动,即不考虑()的影响。
参考答案:摩擦和其它阻力
You’ll be easily to be by the company if you are expert at the computer and you can drive a car as well.
A.taken to
B.taken on
C.taken out
D.taken up
临床上通常所指的中枢神经系统脱髓鞘病不包括()
A.多发性硬化
B.视神经脊髓炎
C.急性播散性脑脊髓炎
D.弥漫性硬化和同心圆硬化
E.脑白质营养不良