The example of the Apollo Ⅱ moon launch is given to illustrate that ______.
A.minor, mistakes can be ignored in achieving major objectives
B.failure is the mother of success
C.a(chǎn)djustments are the key to the successful completion of any work
D.keeping one's goal in mind helps in deciding which details can be overlooked
第1題
在低瓦斯礦井的采掘工作面采用毫秒爆破時,采用()起爆,爆破效果較好。
A.正向
B.反向
C.正反向
第2題
在高瓦斯礦井的采掘工作面采用()爆破時,若采用反向起爆時,必須制定安全技術(shù)措施
A.毫秒
B.分段
C.定向
為了保護(hù)您的賬號安全,請在“上學(xué)吧”公眾號進(jìn)行驗證,點擊“官網(wǎng)服務(wù)”-“賬號驗證”后輸入驗證碼“”完成驗證,驗證成功后方可繼續(xù)查看答案!