直埋光(电)缆与直埋电力电缆(35kv及以上)平行时,最小净距为2.0米。
A. 正确
B. 错误
个人网上银行客户使用vista操作系统是否支持证书的下载()
A. 不支持
B. 支持
C. 不确定
D. 暂时不支持
不采取其它措施PLC直接连接到交流电网中对交流电压有何要求?
You have a server that has very limited memory but has a very large table. You will use mysqldump to back up this table. Which option will ensure mysqldump will process a row at a time instead of buffering a set of rows?()
A. — quick
B. — skip-buffer
C. — single-transaction
D. — ta