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问题
判断题
为了检测电气设备的绝缘性能,我国规定:10kV对应的允许最高工作电压为11.5kV。
答案
参考答案:错
解答题
(1)x
2
-7x+10=0
(2)(2x-1)
2
-(x+2)
2
=0.
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补全对话,情景问答
选择合适的选项,补全对话。
A. down B. Thank you C. Excuse D. lost E. Yes
A: 1___________ me. Can you help me?
B: 2___________?
A: I'm 3___________. Where is the park?
B: Just go 4___________ the street and turn left at the traffic lights. Then you'll find the park on your left.
A: 5___________.
B: You're welcome.
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