下列哪个按钮是表示“加粗”按钮（）。 ["B","I","U","A"]
On which of the following heated surfaces of a flash type evaporator would you be more likely to find soft scale formation?（） ["Feed-water heater internal tube surfaces","Internal distillate cooler tubes","Flash chamber vertical surfaces","Distilling condenser tube"]
压裂后产量下降，含水率上升，流动系数上升，流压、油压上升，说明（） ["压裂效果好，地层压力高","压裂效果好，地层压力低","压裂液对地层造成污染","压裂压开了水层"]
商业银行发售理财产品，应委托具有证券投资基金托管业务资格的商业银行托管理财资金及其所投资的资产。
油井压裂时，使用粒径为（）mm的压裂砂。 ["0.2~0.4","0.4~0.8","0.8~1.0","1.0~1.2"]
宾主双方共同面对房门并座时的座次应该如何？
