办理结算业务必须遵循的原则是什么？
参考答案：
办理结算业务必须遵循“有疑必查，有查必复，复必详尽，切实处理”的原则。
用所给动词的正确形式填空。
1. Every day, Simon ______ (spend) two hours ______ (do) his homework.
2. This pair of jeans______ (be) too small for me.
3. When he ______ (be) a child, he ______ (want) to become a doctor.
4. Would you like ______ (chat) with my friends after school?
5. The garden is the best place ______ (grow) flowers.
6. They______ (plant) trees in the park next week, aren't they?
7. Jim has some good friends. They ______ (have) a field trip next week.
8. Hurry! Your mother ______ (wait) for you at the school gate.
9. ______ Kate ______ (have) a meeting last Saturday?
10. —Don't you know today is Kate's birthday?
—Sorry! I ______ (forget) the date!
信用证上有时规定交单期。信用证上可规定“在提单日后若干天内交单”的条款，如未作此项规定，则必须在不超过信用证有效期的前提下于出单日后______天内交单。
A．30B．14C．21D．7
