墙体砌筑工程量计算的过程中,应扣除以下()
A.各类洞口
B.混凝土构件
C.嵌入墙内的消火栓箱
D.加固用钢筋
参考答案:B, C
This is the best dinner that I________.
A.enjoyed
B.have enjoyed
C.had enjoyed
D.enjoy
超调量 (percent overshoot) σ %