按照?qǐng)D畫出所示圖形,求該圖形的面積。()
A.383.7104 B.383.1740 C.383.7140 D.383.7410
按照?qǐng)D畫出所示圖形,求剖面線區(qū)域的面積。()
A.103.0793 B.103.0379 C.103.0397 D.103.7039
按照?qǐng)D畫出所示起重機(jī)吊鉤,求尺寸A的數(shù)值。()
A.223.3903 B.223.9603 C.223.9903 D.223.9973