【单选题】Man: The front tire is flat, and the seat needs to be raised.Woman: Why not take it to Mr. Smith?Question: What kind of work does Mr. Smith probably do?
【简答题】听下面的材料,回答1-3题。 1.What's the relationship between the speakers? A. Garage owner and customer. B. Strangers. C. Neighbors. 2.What's wrong with the car? A. There was a flat tire. B. There is something wr...
【多选题】为了获得纯净而易过滤、洗涤的晶形沉淀,要求
【单选题】下列说法错误的是:()。
A.
石门和立井、斜井工作面从掘进至距突出煤层的最小法向距离10m开始,必须采用物探或钻探手段边探边掘,保证工作面到煤层的最小法向距离不小于远距离爆破揭开突出煤层前要求的最小距离。
B.
采用远距离爆破揭开突出煤层时,要求石门、斜井揭煤工作面与煤层间的最小法向距离是:急倾斜煤层2m,其他煤层1.5m。要求立井揭煤工作面与煤层间的最小法向距离是:急倾斜煤层1.5m,其他煤层2m。如果岩石松软、破碎,还应适当增加法向距离。
C.
揭煤工作面用远距离爆破揭开突出煤层后,若未能一次揭穿至煤层顶(底)板,则仍应当按照远距离爆破的要求执行,直至完成揭煤作业全过程。
D.
在实施局部综合防突措施的煤巷掘进工作面和回采工作面,若预测指标为无突出危险,则只有当上一循环的预测指标也是无突出危险时,方可确定为无突出危险工作面,并在采取安全防护措施、保留足够的预测超前距的条件下进行采掘作业;否则,仍要执行一次工作面防突措施和措施效果检验。
【单选题】为了获得纯净而易过滤、洗涤的晶形沉淀,要求
【单选题】LaToya had a bicycle tire go flat while on a biking trip across Tennessee. She normally uses Michelin tires but settled for an Excel brand tire because that was the only brand stocked at the closest b...
B.
heterogeneous shopping
【单选题】The tire is flat, but what really ________ us is who we can turn to for help in this rural area.
【单选题】Find out the controlling idea of each sentence. Fixing a flat tire on a bicycle is easy if you follow these steps.
B.
Fixing a flat tire on a bicycle is easy