皮皮学，免费搜题
登录
搜题
【单选题】
预防性消毒是指A.
对现有或传染源的场所进行的消毒
B.
对病人的排泄物,分泌物和污染物品、场所等及时进行的消毒
C.
在未发现传染源的情况下,对有可能被病原体污染的物品、场所等进行的消毒
D.
传染源离开后,对其居室环境进行的彻底消毒
E.
以上都对
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
【简答题】Match the expressions with the pictures
【简答题】Match the pictures with the words:
【简答题】What activities are helpful in teaching pronunciation?
【简答题】The teacher told us to match the pictures the paragraphs. [ ] A at B. by C. to D. with
【简答题】Look at the pictures. Match the pictures with the words.
【简答题】match the pictures with words
【简答题】Match the words with the pictures
【简答题】Match the pictures.
【单选题】在设计视图窗口要想拖动使用div标签定义的区块,其position属性的值应该设置为( )?
A.
static
B.
absolute
C.
fixed
D.
relative
【多选题】What activities are typical in Chinese business interactions with foreigners?
A.
Sightseeing
B.
welcome banquet
C.
influence and persuade eaach other
D.
communicate about issues of individual