皮皮学，免费搜题
登录
搜题
【判断题】
一次起动时间不要太长：防止高功率长时间工作。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】背景材料： 南方某特大桥，主梁为预应力混凝土连续箱梁，采用WDJ碗口式钢支架施工，箱梁棍凝土强度C50，配合比为：水泥；砂：石：水：外加剂＝470:700:1055:190:9.5，坍落度14～16cm，第一段箱梁底腹板混凝土浇筑完成后，拆除内模时发现箱梁腹板内侧出现竖向构造裂缝。 问题： 防止钢筋混凝土结构出现构造裂缝的措施有哪些?
【单选题】根据ANOVA表,请判断上述b处分别应填入何数字? Source df ss ms f Factor 5 43.25 8.65 c Error a 256.50 b total 19 299.75
A.
b=13.5
B.
b=19.73
C.
b=18.32
D.
b=17.1
【简答题】某气柜的容积为 5000 m 3 ,若气柜内的压力为 100kPa ,温度为 27 °C。已知各组分气体的体积分数见下表, 大气压力为 101.3 kPa ,试计算:( 1 )气柜内各气体的密度;( 2 )气柜满载时各组分的质量;( 3 )气柜内气体的平均密度。 学号 混合气体体积分数 氮气 二氧化碳 甲烷 1 0.45 0.34 0.20 2 0.30 0.48 0.22 3 0.10 0.34...
【单选题】Mortgage - backed securities
A.
have been growing in popularity in recent years as institutional investors look for attractive investment opportunities.
B.
are securities collateralized by a pool of mortgages.
C.
are securities collateralized by both insured and uninsured mortgages.
D.
are all of the above.
E.
are only A and B of the above.
【单选题】根据ANOVA表,请判断上述a处分别应填入何数字? Source df ss ms f Factor 5 43.25 8.65 c Error a 256.50 b total 19 299.75
A.
a=15
B.
a=14
C.
a=16
D.
a=13
【单选题】Securities dealers _________
A.
sell securities out of their inventories to customers who want to buy.
B.
buy securities, which they add to their inventories, from customers who want to sell.
C.
are largely responsible for the health and growth of small businesses in the United States.
D.
do all of the above.
E.
do only A and B of the above.
【单选题】Which of the following is true of secondary securities?
A.
They include equities, bonds, and other debt claims.
B.
They are backed by the real assets of corporations issuing them.
C.
They are securities backed by primary securities.
D.
They are securities issued by FIs.
E.
They must be placed in a separate account on order for primary securities to be offered.
【单选题】根据ANOVA表,请判断上述c处分别应填入何数字? Source df ss ms f Factor 5 43.25 8.65 c Error a 256.50 b total 19 299.75
A.
c=0.51
B.
c=0.
C.
c=0.169
D.
c=0.472
【简答题】为保障 GPRS 数据安全,采用了 AAA 服务器,用于完成 、 、 三个过程。
相关题目：