【单选题】Which of the following is oolong tea?
D.
Junshan Silver Needle Tea
【单选题】The major difference between oolong tea and black tea is
A.
the oxidizing degree of tea polyphenol
B.
the change in moisture
D.
the extent of metals content
【单选题】有关曲轴的安装,下面说法正确的是( )。
C.
在轴承的内、外两个表面上都抹发动机油,然后安装
【单选题】___________ is a famous type of oolong tea.
【单选题】有关曲轴的安装,下面说法正确的是( )。
C.
在轴承的内、外两个表面上都抹发动机油,然后安装