皮皮学，免费搜题
登录
搜题
【判断题】
直流母线应采用分段运行的方式，设置在两段直流母线之间联络开关，正常运行时开关处于断开位置。A.
正确
B.
错误
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】对于同一种防腐剂,试述其杀菌和抑菌作用之间的辨证关系。
【单选题】—Who is your new head teacher this semester? —The woman _______ is wearing a red skirt. [ ]
A.
whom
B.
who
C.
whose
D.
which
【单选题】The new appointment (任命) of our president _________ from the very beginning of the next semester.
A.
takes effect
B.
takes place
C.
takes turns
D.
takes part
【简答题】A: ______ is your plan in the new semester? B: I ______ take part in school activities a lot in the new semester.
【简答题】于同一种防腐剂，试述其杀菌和抑菌作用之间的辨证关系。
【简答题】铺铜的作用和方式?
【单选题】What are they talking about?
A.
Their summer holiday.
B.
Their jobs.
C.
Their new semester.
【简答题】With the start of the new semester students around the country exchange their fun and fashionable clothes for boring school uniforms. 'The uniform makes us look like a bunch of clones, especially when...
相关题目：