国际普通汇款发汇的汇费按汇款本金的（）收取，并按汇款本金收取此比例的汇钞差价。
A、10%
B、7%
C、5%
D、3%
参考答案：D
Which word of the following doesn't have the same stress as the others?
A. Spanish B. Accept C. Repeat
皮带防护罩与皮带的距离不应小于()。
A．2m
B．50mm
C．15cm
D．3m
