A.左邊的鉤碼數(shù)乘以格數(shù)大于右邊的鉤碼數(shù)乘以格數(shù)。 B.左邊的鉤碼數(shù)乘以格數(shù)小于右邊的鉤碼數(shù)乘以格數(shù)。 C.左邊的鉤碼數(shù)乘以格數(shù)等于右邊的鉤碼數(shù)乘以格數(shù)。
A.是的 B.不是
A.用力點(diǎn) B.支點(diǎn) C.阻力點(diǎn)