公司总部要对示范工程的实施给予重点关注和切实有效的支持,起到总控制、总协调、总调度的作用。()
参考答案:对
—Good news. We will have a holiday. .
—I’ve heard of it. But it’s coming in .
A.three days; three days’ time
B.three days’; three days'.
C.three-day; three days
D.three days; three-day time
为了消除铸造热应力,在铸造工艺上应保证()
A.顺序(定向)凝固
B.同时凝固
C.内浇口开在厚壁处