钢筋砼
参考答案:
浇筑砼之前,先进行绑筋支模,也就是用铁丝将钢筋固定成想要的结构形状,然后用模板覆盖在钢筋骨架外面。最后将砼浇筑进去,经养护达到强度标准后拆模。
隐匿性冠心病诊断依据是()
A.肥胖
B.血脂高
C.有长期大量饮酒史
D.有家族史
E.心电图有缺血型ST-T改变
下列选项中哪一条可以准确的匹配并代替以下四条访问控制列表()
(1):access-list 10 permit172.29.16.00.0.0.255
(2):access-list 10 permit172.29.17.00.0.0.255
(3):access-lis t10 permit172.29.18.00.0.0.255
(4):access-list 10 permit172.29.19.00.0.0.255
A.access-list 10 permit 172.29.16.00.0.0.255
B.access-list 10 permit 172.29.16.00.0.1.255
C.access-list 10 permit 172.29.16.00.0.3.255
D.access-list 10 permit 172.29.16.00.0.15.255
E.access-list 10 permit 172.29.16.0255.255.252.0