加油站采用加油机付油时，要求汽油的零售损耗率不大于（）
A.0.29%
B.0.47%
C.0.16%
参考答案：A
3．Tom went against his promise ______ he would never cheat in exams, ______ made him unpopular with his classmates.
A．that; that
B．which; that
C．that; which
D．which; which
装药集中度
