已知某工程机械成孔灌注桩的总长度为1256.7m，计算实体为3568m3，扩大头部分体积为586m2，充盈量体积为850m3，则该工程桩基础工程量为( )。
A. 1256.7m3
B. 3568m3
C. 4154m3
D. 5004m3
关于外墙面装饰抹灰工程量计算说法错误的为( )。
A. 应扣除门窗洞面积
B. 应扣除0.3m2以上孔洞所占的面积
C. 不扣除勒脚所占的面积
D. 附墙柱的侧面抹灰并入墙面工程量内计算
Which of the following is true
As long as algae produces enough oxygen on Venus, people can land there.
B. To live on Venus is the only way to ensure the survival of human race.
C. Venus is possibly very similar to the earth both in size and mass.
D. Life on Venus will be pleasant at first.
生石灰的原料是( )。
A. CaO
B. CaCO3
CaC2
D. Ca(O2
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