液压()元件是把通过式回路输入的液压能转变成机械能输出的装置。
参考答案:执行
—Would you like to come to dinner tonight?
— , but I’ve got a lot of things to do.
A.Sorry, I wouldn’t
B.Yes, I’d like
C.No, I wouldn’t
D.Yes, I’d love to
用手将一重为5N的物体全部压入水中,物体排开的水重为6N,此时物体受到的浮力为______N;放手后物体将______(选填“上浮”“下沉”或“悬浮”);待物体静止时它排开水的体积是______m3.(g=10N/kg)