皮皮学,免费搜题
登录
搜题
【单选题】
下列关于细菌分离培养时的无菌技术,错误的是
A.
细菌分离培养细菌实验室内进行
B.
接种环分离和移种细菌时,用前用后均需灭菌
C.
从试管培养物中取标本时,在打开或关闭前,均要在火焰上通过2~3次
D.
因不慎菌液污染桌面后,可用3%来苏处理,至少浸泡10分钟
E.
工作完毕后,用紫外线灯照射30分钟
拍照语音搜题,微信中搜索"皮皮学"使用
参考答案:
参考解析:
知识点:
.
..
皮皮学刷刷变学霸
举一反三
【多选题】儒家提倡的修身之道包括()
A.
修己
B.
克己
C.
慎独
D.
自省
【简答题】《诗经·大雅》中被认为是周族史诗的作品有:《生民》、《 》、《緜》、《皇矣》和《大明》。
【单选题】哪个命令可以将普通用户切换成超级用户() A. B. C. D.
A.
su
B.
passwd
C.
tar
D.
super
【简答题】小明同学学习了“声音的产生与传播”后知道了声速的大小跟介质的种类有关,还跟介质的温度有关.于是他思考:声音在空气中传播的速度与温度有什么具体的关系呢?在老师的指导下他收集到了如下表所示的一组数据. 空气温度/℃ -20 -10 0 10 20 30 声音速度/(m?s -1 ) 319 325 331 337 343 349 说一说:阅读分析表中的数据,你知道声音在空气中传播的速度与温度有什么具体...
【判断题】I did not foresee that my case would arouse huge attention in the U.S.
A.
正确
B.
错误
【单选题】Never before ________ buying a computer, but now it seems a necessity in my everyday life.
A.
did I think of
B.
have I thought of
C.
I thought of
D.
I have thought of
【单选题】The research chemists did not foresee the effects of the drug, and ____ the doctors who prescribed it.
A.
never did
B.
no did
C.
nor did
D.
either didn’t
【多选题】儒家提倡的修身之道包括( )
A.
修己
B.
慎独
C.
克己
D.
自省
【简答题】When I was young, I belonged to a club that did community service work. There was one specific  36  that was unusual for me. I spent three or four hours handing out warm dinner to the homeless   37   ...
【单选题】We did not foresee the powerful social networking side of the()and its rapidly growing impact on our society.
A.
IP
B.
Internet
C.
protocol
D.
TV
相关题目: