皮皮学，免费搜题
登录
搜题
【简答题】
某施工单位承接了一座桥梁和一条隧道施工任务。桥梁采用明挖扩大基础，基础采用现浇钢筋混凝土结构，承台混凝土体积约为300m 3 ，基坑开挖深度为4m，原地面往下地层依次为：0-50cm腐殖土，50-280cm黏土，其下为淤泥，地下水位处于原地面以下200cm，由于受周围地物影响，施工现场场地有限。 根据该桥墩的水文地质，施工单位在基坑开挖过程中采取了挡板支撑的加固措施，以防止边坡不稳造成塌方；在挖除基础底部底层松软土、换填10-30cm厚砂砾土垫层、使其符合基底的设计标高并整平后，即立模灌筑承台混凝土。 为控制混凝土的水化热，施工单位采取了以下措施： （1）选用水化热低的水泥 ； （2）选用中、粗砂，石子选用的碎石和卵石； （3）选用复合型外加剂和粉煤灰以减少绝对用水量和水泥用量，延缓凝结时间。 在隧道施工中，由于有大量爆破施工。为了方便管理，爆破器材放在紧靠办公室的一个小仓库里，并且由专人进行发放。在进行洞口的大型爆破之前，施工单位技术人员经过计算确定了爆破药量、爆破方式以及安全距离，让民工甲领取了炸药和雷管，用自行车运到施工现场，然后爆破作演示，安排民工乙负责在爆破安全距离外来回走动进行警戒。 指出隧道施工中潜在的安全隐患？
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】Profit margin is calculated by dividing ( )
A.
sales by cost of good sold
B.
Gross profit by net sales
C.
net income by equity
D.
net income by net sales
【单选题】All of the following statements regarding profit margin are true except:
A.
Profit margin reflects the percent of profit in each dollar of revenue.
B.
Profit margin is also called return on sales.
C.
Profit margin can be used to compare a firm's performance to its competitors.
D.
Profit margin is calculated by dividing net income by net sales.
E.
Profit margin is not a useful measure of a company’s operating results.
【简答题】参与者的类型可以是( )、设备、( )和时间
【简答题】Liner freight rates will cover actual costs and a margin of profit．（ ）
【单选题】All of the following statements regarding profit margin is true except
A.
Profit margin reflects the percent of profit in each dollar of revenue.
B.
Profit margin is also called return on sales.
C.
Profit margin can be used to compare a firm's performance to its competitors.
D.
Profit margin is calculated by dividing net income by net sales.
E.
Profit margin is not a useful measure of a company’s operating results.
【简答题】Calculate the Gross profit margin and Net profit margin
【单选题】3-96 All of the following statements regarding profit margin are true except:
A.
Profit margin is not a useful measure of a company's operating results.
B.
Profit margin is also called return on sales.
C.
Profit margin can be used to compare a firm's performance to its competitors.
D.
Profit margin reflects the percent of profit in each dollar of revenue.
E.
Profit margin is calculated by dividing net income by net sales.
【单选题】The profit margin ratio measures:
A.
Profit generated by each dollar of sales
B.
Profit generated by each dollar of expenses
C.
The expenses incurred for each dollar of sales
D.
The overall profitability of assets
相关题目：
参考解析：
知识点：
题目纠错 0
发布
