首页
登录
职称英语
Concrete Another thing to remember in connecti
Concrete Another thing to remember in connecti
游客
2024-10-27
10
管理
问题
Concrete
Another thing to remember in connection with concrete is that you are not allowed very much leeway for errors in either measurements or location. Once you have a solid mass of concrete set in place, it is going to stay there. You have a difficult job ahead of you if you try to remedy a mistake. Make very sure, before you fill the form, that everything is where and how you want it.
There are numerous rules regarding the proper mixing handing, and finishing of concrete, but the essential one concerns the amount of water to use. The less water in the mix, the less the finished job will shrink. The less water used, the harder and more enduring the job after it has set.
The amateur concrete worker is plagued with two desires. One is to use enough water to have the concrete nice and soft and easy to push around. You have been warned against that. The second is to take off the wooden forms too early, to see what the job looks like. That is really fatal. If the forms are stripped off too soon, while the concrete is still green, two things are likely to happen--you are almost sure to break off corners or edges, and you are likely to cause a major crack or defect in the body of the work. An excellent rule is to wait until you are sure the concrete is properly hardened, and then wait another day before removing the forms. [br] By the concrete being too "green", the author means that the concrete has
选项
A、become cracked.
B、not yet cured.
C、not dried out.
D、not settled in place.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3819598.html
相关试题推荐
ConcreteAnotherthingtorememberinconnecti
ConcreteAnotherthingtorememberinconnecti
Theinventionofthecomputerissaidtohaveusheredinanotherrevolution____
Spendtheextradollarstomaintainyourequipment.Remember,youdon’thaveto
Tedcouldn’tremembertheexactdateofthestorm,butheknewitwasSundaybec
That______meofthedaysIspentinthecountryside.A、remindedB、rememberedC、
Heassuredusthatthehousewas______enoughtolastanotherfiftyyears.A、sub
Doyouremember______totheDr.Leeduringhislastvisittoourcollege?A、tobe
Someofhissuggestionswereplausible,butIdon’tremember____.A、whatoneB
Whenyouchooseafreezer,rememberit’sprobablygoingtobewithyoufora
随机试题
[originaltext]W:Tom,IunderstandwhenHavasMediaNorthAmericahiredyouear
下列有关间接免疫荧光法的错误叙述是A.灵敏度高 B.针对特异性抗原的是第一抗体
行政诉讼的执行条件不包括()。A.须有执行根据 B.被执行人有能力履行而不
梁下部纵向受力钢筋接头位置宜设置在()。A、梁跨中1/3处 B、梁支座处 C
灯心草质地松泡且用量大宜放在斗架哪层A.中层 B.最下层 C.左层 D.右
载脂蛋白E基因位于19号染色体长臂3区上,含有A.4个外显子和4个内含子 B.
患者男,56岁。原发性肝癌,行肝叶切除术后,出现嗜睡、烦躁不安、黄疸,考虑为肝性
倡导教育要重视培养“社会一致”的精神的教育思潮是()A.改造主义教育 B.
八股文
《离骚》是屈原创作的中国古代最长的抒情诗,开创了中国文学史上的“骚体”诗歌形式,
最新回复
(
0
)