皮皮学，免费搜题
登录
搜题
【多选题】
UPS电源主机定期维护的主要内容是（）A.
检查设备的运行状况，对需要进行清扫的机器进行除尘清扫
B.
对设备内主要部件进行静态测试
C.
检测机内易损单元（逆变器，整流器，静态开关）
D.
主机内部连线和设备的输入，输出联接端子检查
E.
恢复设备运行，检测设备的输出主要性能指标
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】New Year came, we ____ to reader friends here!
A.
firecracker
B.
cross talk
C.
pay a New Year call
【简答题】crashed; B. clashed C.clashing; D. crashing 1.Their swords ______. 2. The two armies ______ outside the town. 3. I ______ with him at the meeting. 4. Their car _______ into a guardrail. 5. A gu...
【简答题】When a light passenger plane flew off course[跑道] some time ago, something was wrong with it and it crashed[坠毁] in the mountains and its pilot was killed. The only passengers, a young woman and her two...
【单选题】When we came here this tme last year, a new bridge _____.
A.
is built
B.
is being built
C.
was built
D.
was being built
【单选题】关于行政补偿的性质，有人认为是“行政机关为实现公共利益而实施的一定行为所必然伴随的一种义务”，该学说属于()
A.
法律责任说
B.
行政行为说
C.
法定义务说
D.
综合说
【单选题】A gust of wind swept the bed off the roof and sent it ______ into the courtyard below.
A.
crash
B.
crashing
C.
clash
D.
crashed
【简答题】“211限时送达”含义是什么?
相关题目：
参考解析：
知识点：
题目纠错 0
发布
