我国规程中规定线路防雷设计用雷电流波头时间为()。
A、1.2s
B、1.5s
C、2.6s
D、10s
参考答案:C
— I'm dead tired. I can't walk any farther, Jenny.
— _____ ,Tommy. You can do it! [ ]
A. No problem
B. No hurry
C. Come on
D. That's OK
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