管子焊口焊后进行热处理时,加热宽度从焊口焊缝中心起每侧不少于焊缝宽度()倍,且不少于()毫米。
参考答案:3;30
Only when _____ possible to settle the problem. [ ]
A. does he come will it be
B. he comes it will be
C. has he come it will be
D. he comes will it be
灾害救助包括()
A、现金救助
B、政策救助
C、实物救助
D、以工代赈