在进行埋地管道施工时，为了便于下管，管沟施工时挖出来的土宜放在沟边，土堆与沟边的最小距离不得小于0.5米
参考答案：对
In order to gain a bigger share in the international market, many state-run companies are striving ______
their products more competitive. [ ]
A. to make
B. making
C. to have made
D. having made
Jackson结构化程序设计方法是英国的M.Jackson提出的，它是一种面向 【3】 的设计方祛。
