什么叫接触电压?
参考答案:在接地短路回路上,人身同时接触距设备水平距离为0.8米,沿设备垂直距离为1.8米的两点时,所承受的电压称为接触电压。
---What does Old Walter usually do in his retirement?
---- These days he is ______ memories of village life for his new book.
A.putting up
B.putting on
C.setting up
D.setting down
下列哪个属于宏观的教育评价?()
A.对儿童道德品质的评价
B.对儿童认知能力发展的评价
C.对学前教育行政管理的评价
D.对儿童健康状态的评价