把补偿贸易分为直接补偿、间接补偿和部分补偿按照的是()
A.出口货物的差别
B.支付办法的不同
C.产品性质的优劣
D.服务方式的好坏
参考答案:B
根据句子意思,填入合适的介词。
小题1:You should listen __________ the teacher in class.
小题2:Are you ready __________ the class?
小题3:There are two beautiful pictures __________ the wall.
小题4:Happy Birthday! This is the present _________ you.
小题5:We are having a sports meeting __________ the playground now.
27岁初孕妇,在妊娠20周预测妊娠期高血压疾病最有价值的方法是().
A.左侧卧位较仰卧位的舒张压高20mmHg
B.黄体酮试验
C.平均动脉压测定
D.B型超声检查
E.尿妊娠试验