【单选题】Hardly had she finished her lecture ______ the students started clapping.
【单选题】Her lecture ______ all the recent developments in the subject, which will attract more people.
【单选题】(1405-72)下列哪个关于PreparedStatement说法是错误的?( )
A.
PreparedStatement继承Statement
B.
PreparedStatement可以利用占位符?实现参数化SQL,防止SQL注入问题
C.
PreparedStatement是预编译的,效率高于Statement
【简答题】出口商在跟单托收中可能存在哪些风险?应如何采取防范措施?