挂篮的设计要求,以下哪一条是对的() A.挂篮质量与梁段混凝土的质量比值宜控制在0.

题型:单项选择题

问题:

挂篮的设计要求,以下哪一条是对的()

A.挂篮质量与梁段混凝土的质量比值宜控制在0.3~0.5之间,特殊情况下不应超过0.8

B.挂篮的总重不用控制在设计限重之内

C.挂篮允许最大变形(包括吊带变形的总和)不超过20mm

D.挂篮行走、浇筑混凝土时的抗倾覆安全系数大于2,自锚固系统的安全系数大于3,斜拉水平限位系统的安全系数大于3,上水平限位系统的安全系数大于2

考点:二建公路专业继续教育二建公路专业继续教育题库
题型:单项选择题

根据首字母填出台适的单词。

     Last Sunday I saw the worst storm in years. It came suddenly in the mid afternoon and lasted more than

3 hours. At first, the Sky g_____ dark all of a sudden. Within minutes, forks of lightening f_____ a way into

the sky. Ten it was f_____ by the boom of thunder. A very strong wind blew into my room. My valuable

notes, l______ on the desk in the room, flew high into the air. I jumped uped up to catch them but unluckily a

few sheets sailed out of the open window. As I ran out to get the notes, big d_______ of rain began to fall.

     As soon as I ran back into the house, the rain began to p_______ in waves. If ______ to close the windows. I did it but was wet all over. I d_____ myself with a towel. Then I heard a sudden loud sound from the back of

the house. I ran out of the room to find out what it was. A tree was broken. Part of its big branches lay a

________ the floor. The table was broken into pieces. It would take a lot of work to r ________ it. Hoover

we were thankful that no one was hurt.

题型:单项选择题

某一理论“使人们的认识由低速领域扩大到高速领域,由宏观领域延伸到宇宙领域,人们第一次深刻地认识到时间、空间和物质的运动相互依赖”这一理论指的是

A.牛顿的经典力学

B.达尔文的进化论

C.爱因斯坦的相对论

D.普朗克的量子论

题型:单项选择题

当地形起伏不大,坡度在20°以内,挖填平整土方的面积较大,土的含水量适当,平均运距(一般在1km以内)时,采用()较为合适。

A、推土机

B、铲运机

C、正铲挖土机

D、拉铲挖土机

题型:单项选择题

某患者婚后3个月,停经40天,轻度腰酸,右腹部疼痛, * * 出血量多,查子宫孕40天大小,宫口未开,宫体质软,尿妊娠试验(+),诊断可能最大为

A.过期流产

B.葡萄胎

C.先兆流产

D.完全流产

E.宫外孕

题型:单项选择题

下图为某遗传系谱图,系谱图中有患甲病(基因A、a)、乙病(基因B、b)和甲乙两病兼患者。II7无乙病家族史。请回答以下问题(概率用分数表示)。

甲病的遗传方式为()

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