每次可以应用多个探针
每次只能应用一个探针
探针稳定,操作安全
可以联合应用地高辛或生物素多种标记系统
快速敏感
第1题:
Why is it a problem if all the smaller fish species die?
A. It's not healthy for the environment.
B. People only like to catch big fish.
C. There are too many small fish.
D. The smaller fish can get lost in the lake.
第2题:
下列有关外阴部手术术前准备说法错误的是
第3题:
The underlined words “the evicted fish” in Paragraph 3 refer to .
A. the fish beaten up B. the fish found out
C. the fish fattened up D. the fish driven away
第4题:
有关黄疽的概念,哪种说法是错误的 ( )
第5题:
下列有关预收款的说法,错误的是( )。
第6题:
Large fish usually ____ small fish.
A:gather
B:take on
C:feed on
D:organize
第7题:
有关药品价格管理说法错误的是 ( )
第8题:
30. Why can fish swim in the water? Jack's answer is ________ .
A.fish can't walk on land
B. fish can- t swim on land
C. fish can-t walk in the water
D.fish has no legs or hands
第9题:
有关维生素的说法错误的是( )。
第10题: