一国某一时期的出口总额超过进口总额时，称为()。

As the number of participants has increased from 60 to 98, we wonder if we can useLecture Hall 'A' as ' B' will be too small.

What do Shona's initial results show about medical services in Britain?

Learning to cope with a health problem can contribute to a better life.

《1966年国际载重线公约》不适用下列哪些船舶？()。①军舰；②长度小于24m的新船；③小于150总吨的现有船舶；④非营业性游艇、渔船。

In order to set up her research programme, Shona got____.

男性，5 个月，低热，喘憋，肺部明显哮鸣音。最可能的诊断是（）

Hamlet ______ by Shakespeare.

用于采集总悬浮颗粒的滤膜在采样前、后应在（）条件下称重。

下列有权制定地方性统计法规的是（）。