我国《规范》测定混凝土轴心抗压强度的标准试块是（）A、立方体试块 B、棱柱体试块 C 发布时间：2017-07-26 11:00 │ 来源：www.tikuol.com 题型：单项选择题 问题： 我国《规范》测定混凝土轴心抗压强度的标准试块是（）A、立方体试块B、棱柱体试块C、圆柱体试块D、六棱体试块
题型：单项选择题 完形填空。 Bill Gates 1 on October 28th, 1955. He 2 in Seattle, Washington. His favorite subjects at schoolwere science and math. 3 he was 13 years old, Bill started to play with computers. Computers at that time 4 very large, but he was interested 5 them. He 6 lots of time doing unusual things with computers. In the end, he and some of his friends worked out a software program (软件程序) with an old computer. He 7 it for ＄4,200 dollars. In 1973, Bill 8 Harvard University (哈佛大学). He left there in the third year to work for a company called Microsoft. In 1975 Bill began his company 9 his friend Paul Allen. They developed software for personal computers. They improved (改进) the software to make it 10 forpeople to use computers. ( )1. A. is born ( )2. A. grow ( )3. A. At ( )4. A. is ( )5. A. at ( )6. A. took ( )7. A. sell ( )8. A. went ( )9. A. and ( )10. A. easy B. was born B. grew B. Until B. are B. in B. put B. sale B. went to B. with B. easier C. did born C. grew up C. When C. was C. on C. paid C. sold C. want C. for C. difficult D. born D. has grew up D. At the moment D. were D. for D. spent D. bought D. wanted D. by D. more difficult 查看答案
题型：单项选择题 某商店将进价为8元的商品按每件10元售出，每天可售出200件，现在采取提高商品售价减少销售量的办法增加利润，若这种商品每件的销售价每提高0.5元，其销售量就减少10件.问（1）每件售价定为多少元时，才能使利润为640元？（2）每件售价定为多少元时，才能使利润最大？ 查看答案
题型：单项选择题 “二战期间，美国研制了原子弹并用于实战；1946年美国投入使用的第一台电子计算机，最初是用来计算炮弹弹道的；德国研制成功远程液体燃料火箭，是用于空袭英国的。”以上史实说明A．科技革命导致了二战的爆发B．科技带来的是毁灭性后果 C．科技成果总是诞生于战争中D．科技具有双刃剑的作用 查看答案
题型：单项选择题 FIDIC土木工程施工合同条件规定，在()情况下，监理工程师应批准承包商合理展延合同工期。A．工程发生额外或附加工作需要延期完成 B．现场出现异常恶劣的气候条件无法正常施工 C．承包商的机械设备故障造成的暂停施工 D．业主提供的设备延期到货造成的延误 E．承包商施工组织不当导致的停工 查看答案