下列混凝土构件清单工程量计算过程中,()构件是按照水平投影面积计算混凝土浇捣工程量的。
A.混凝土阳台
B.楼梯
C.挑檐
D.混凝土板
参考答案:A, B, C
He decided to go to America alone to make his fortune without any friends or ________.[ ]
A. families
B. possession
C. help
D. possessions
Where ______ they go yesterday? [ ]
A. are
B. do
C. did
D. does