根据提单有无批注条款，海运提单可分为( )。
A．“清洁提单”
B．“不清洁提单”
C．记名提单
D．不记名提单
E．指示提单
参考答案：A,B
正常人体的血液的PH为______，为______性．
A: What shall I do I've got so many things on my mind now. Will anybody help me B:______
A．How can I get support from others
B．Don't expect me to help you. Is there anybody who can help me
C．Don't ask me. It's your baby, Mary. See, my hands are full.
D．Sorry, I didn't expect you are so busy.
