【简答题】A.She was invited only for the weekend. B.The weather was too hot. C.She had an appointment. D.She had schoolwork to do.
【单选题】《标准》中规定的各级公路所能适应的交通量是指( )。
【判断题】词根ped经过了元音音变后为pod,都表示foot含义。
【单选题】正压送风系统的正确启动顺序是()。
A.
火灾探测器或手动报警信号报警→正压送风机启动→正压送风口打开
B.
正压送风机启动→火灾探测器或手动报警信号报警→正压送风口打开
C.
火灾探测器或手动报警信号报警→正压送风口打开→正压送风机启动
D.
正压送风口打开→正压送风机启动→火灾探测器或手动报警信号报警
【单选题】第 7 题(本题:1分) 下面描述中,不属于软件危机表现的是( )。
【简答题】A.She was invited only for the weekend. B.The weather was too hot. C.She had an appointment. D.She has schoolwork to do.
【判断题】读写器命令完成响应帧也是一种变长数据帧。
【单选题】锅炉运行时关于启动除渣机和炉排的顺序正确的是()