下列哪项既是造成锁定的原因又是衡量锁定程度的主要指标?()
A.网络效应
B.沉没成本
C.交易费用
D.转移成本
参考答案:D
根据图画和短文的内容,在短文的空白处填上一个适当的词,使短文意思完整。
It was a reading room. A boy and a girl were 小题1:____ at a desk. The girl was 小题2:____ when the boy suddenly laughed(大声笑), because he was reading a book of funny 小题3:____. The girl 小题4:_____ the boy. And she asked him to 小题5:______ at the sign(标识) with the words “Be quiet”. The boy felt 小题6: ____ and stopped 小题7:____ at once. But he still 小题8:______ to read these funny jokes. Then he thought of an 小题9:_____ . He took the book 小题10:______ and continued(继续) reading it. He laughed as loudly as he could.
下列哪一位不是日本人()
A.空海
B.阿倍仲麻吕
C.吉备真备
D.鉴真