皮皮学，免费搜题
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【多选题】
关于网络采购,说法正确的是A.
网络采购能够形成有效竞争
B.
网络采购可以减少人为干扰因素
C.
网络采购降低了采购成本
D.
无订单采购和无票据自动结算是网络采购的最佳形式
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
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【单选题】在某矿区内拟建设一座66/10kV变电所，两回66kV架空进线，设两台主变压器，型号S9-6300/66，采用屋内双层布置，主变压器室、10kV配电室、电容器室、维修间、备件库等均布置在一层，66kV配电室、控制室布置在二层。请回答下列问题。（供配电2007）该变电所所址的选择，下列表述中哪一项是不符合要求的（）？并说明理由和正确的做法。
A.
靠近负荷中心
B.
交通运输方便
C.
周围环境宜无明显污秽，如空气污秽时，所址应设在污染源影响最小处
D.
所址标高宜在100年一遇高水位之上
【单选题】Questions 23 to 25 are based on the recording you have just heard. Question 23
A.
Being unable to learn new things．
B.
Being rather slow to make changes．
C.
Losing temper more and more often．
D.
Losing the ability to get on with others．
【单选题】Question 23 is based on the passage you have heard.
A.
Blood flow and body heat increase in the affected area.
B.
Body movements in the affected area become difficult.
C.
They begin to make repairs immediately.
D.
They gradually become fragmented.
【单选题】Questions 23 to 25 are based on the passage you have just heard. Question 23
A.
Because she planned to dedicate her life to teaching career.
B.
Because she wanted to rescue Masai girls from early marriage.
C.
Because she was bored with her quiet life in retirement.
D.
Because her husband encouraged her to do so.
【单选题】在某矿区内拟建设一座66/10kV变电所，两回66kV架空进线，设两台主变压器，型号S9-6300/66，采用屋内双层布置，主变压器室、10kV配电室、电容器室、维修间、备件库等均布置在一层，66kV配电室、控制室布置在二层。请回答下列问题。（供配电2007）该变电所66kV配电室内布置有11台开关柜，采用单列布置，其中有4台柜为柜后架空进出线。请说明栅状遮栏至带电部分之间最小安全净距，下列哪项数...
A.
900mm
B.
1050mm
C.
1300mm
D.
1600mm
【单选题】Questions 23 to 25 are based on the passage you have just heard. Question 23
A.
It is more like a do-it-yourself diagnosis.
B.
It is available only for cancer.
C.
It costs thousands of U.S. dollars.
【单选题】Questions 23 to 25 are based on the passage you have just heard. Question 23
A.
Exploration.
B.
Invention.
C.
Experimentation.
D.
Efficiency.
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