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The boy often goes ( )when he is on his own, because he can’t cook.
( ) the light of what you have told me, I will say that it is he who came here yesterd
They did not want me transferring germs from one patient to ( ).
They( )the orphan as one of the family.
下图所示的盘形转子中,有4个不平衡质量,它们的大小及其质心到回转轴的距离分别为m1=l0kg,r1=100mm,m2=8kg,r2=150mm,m3=7kg,r3=200mm,m4=5kg,r4=100mm。试对该转子进行平衡设计。
()可维持体内钾的平衡,调和其他色彩的刺激A、紫色B、黄色C、绿色D、蓝色
