国际收支平衡表中的非贸易收支包括()。
A、侨汇收支
B、服务收支
C、旅游收支
D、债务收支
参考答案:A, B, C
You may certainly ________ his words, for he always speaks the truth.[ ]
A.pay attention to
B.ask for
C.suffer from
D.rely on
什么是安全地线?它与零线(工作地线)有何区别?