编制土方开挖工程单价应考虑的有关因素中,不属于影响土方挖装工序的主要因素的是()。
A. 土的级别越高,开挖的难度越大,工效越低
B. 设计有形状要求的沟、渠、坑等都会影响工效,尤其断面越小,深度越深时,机械开挖效率越低
C. 不良施工条件,如水下开挖、冰冻土开挖都将严重影响开挖的工效
D. 装卸车的条件,路况,卸土场的条件等都影响运土工效
施工现场架设临时陛跨越沟槽的便桥和边坡栈桥应符合相关要求,以下对其表述不正确的是()。
A. 人行便桥、栈桥宽度不得小于1.2m
B. 手推车便桥、栈桥宽度不得小于2.5m
C. 机动翻斗车便桥、栈桥,应根据荷载进行设计施工,其最小宽度不得小于2.5m
D. 设有防护栏杆
根据材料回答下列各题: Bill Gates: Unleashing Your Creativity Ive always been an optimists and I suppose that is rooted in my belief that the power of creativity and intelligence can make the world a better place. For as long as I can remember, Ive loved learning new things and solving problems. So when I satdown at a computer for the first time in seventh grade, I was hooke D. It was a chunky old teletype ma-chine and it could barely do anything compared to the computers we have today. But it changed my life. When my friend Paul Allen and I started Microsoft 30 years ago, we had a vision of“a computeron every desk and in every home,” which probably sounded a little too optimistic at a time when mostcomputers were the size of refrigerators. But we believed that personal computers would change their world. And they have. And after 30 years, Im still as inspired by computers as I was back in seventh grade. I believe that computers are the most incredible tool we can use to feed our curiosity and inven-tiveness-to help us solve problems that even the smartest people couldnt solve on their own. Computers have transformed how we learn, giving kids everywhere a window into all of theworlds knowledge. Theyre helping us build communities around the things we care about and to stayclose to the people who are important to us, no matter where they are. Like my friend Warren Buffett, I feel particularly lucky to do something every day that I love todo. He calls it "tap-dancing to work". My job at Microsoft is as challenging as ever, but what makesme "tap-dancing to work" is when we show people something new, like a computer that can recognizeyour handwriting or your speech, or one that can store a lifetimes worth of photos, and they say, "Ididnt know you could do that with a PC!" But for. all the cool things that a person can do with a PC, there are lots of other ways we can putour creativity and intelligence to work to improve our worl D. There are still far too many people in theworld whose most basic needs go unmet. Every year, for example, millions of people die from diseasesthat are easy to prevent or treat in the developed world. I believe that my own good fortune brings with it a responsibility to give back to the world. My wife, Melinda, and I have committed to improving health and education in a way that can help as manypeople as possible. As a father, I believe that the death of a child in Africa is no less poignant or tragic than the deathpf a child anywhere else, and that it doesnt take much to make an immense difference in thesechildrens lives. Im still very much an optimist, and I believe that progress on even the worlds toughest problemsis possible--and its happening every day. Were seeing new drugs for deadly diseases, new diagnostictools, and new attention paid to the health problems in the developing world. Im excited by the possibilities I see for medicine, for education and, of course, for technology.And I believe that through our natural inventiveness, creativity and willingness to solve tough prob-lems, were going to make some amazing in all these area in my life. A computer was as big as an icebox when Bill Gates was a high school student. A. Right B. Wrong C. Not mentioned