对容器口进行磨砂处理可提高容器的密封性.下列仪器中对容器口没有进行磨砂处理的是( )
A.
广口瓶
B.
锥形瓶
C.
滴瓶
D.
集气瓶
答案:B
—_________?
—It’s next to the library.
A.Is there a bank here?
B.Is this the bank?
C.Excuse me, where’s the bank, please?
D.Does your father work in a bank?
属于碳源和氮源利用试验是().
A.杆菌肽试验
B.甲基红试验
C.硝酸盐还原试验
D.明胶液化试验
E.丙二酸盐利用试验