三相供电电压不平衡度不大于()。电压波形正弦畸变率不大于5%。
A.3%
B.3.5%
C.4%
D.4.5%
参考答案:C
看图完成短文所缺单词。
Look at the (1) ______. It's very nice. It's a picture (2) ______ Li Lei's (3) ______. I can see a
(4) ______ and a (5) ______ in the room. Li Lei's shoes are (6) ______ the bed. There is a (7) ______
under the desk. (8) ______ the desk, I can see some (9) ______. There is a window and a door
(10) ______ the wall Behind the door, I can see a broom.
在中国城市的区、街、居等社区范围内,在社会工作的价值观和理论知识指导下运用社会工作的方法和技巧,为全体社区成员尤其是特殊困难群体提供专业服务。这里指的是()。
A.社会救助社会工作
B.家庭社套工作
C.学校社会工作
D.社区社会工作