【简答题】洗涤剂去污的原理与汽油去油污的原理不同,属于______.
【单选题】--- I ______ to be here on time. --- But you ______ late again.
【单选题】标注球面半径尺寸时,一般应在尺寸数字前加注
【简答题】I meant to go running this morning , but I overslept.
【判断题】标注球半径尺寸时,尺寸数字前面加“SR”。( )
【判断题】洗涤剂的去污原理可表达为: 织物·污垢 + 洗涤剂 -----→ 织物 + 洗涤剂·污垢