【简答题】下列关于尾气检测说法正确的是The following statement about exhaust gas detection is correct.A. 尾气检测只检测碳氢化合物Exhaust gas detection only detects hydrocarbonsB. 尾气检测工具一般为尾气分析仪Exhaust gas detection tools are usually tail...
【简答题】Make sentences according to the models of sentence structure. Model 4: But there was no easy way to calculate which supplier offered the best price while meeting all the customer's needs 8. while the ...