【多选题】下列()通风空调系统组件可采用难燃材料。
【单选题】在以下规定装运时间 (Time of Shipment) 的合同条款中, ____________ 是一种错误的规定方法。
A.
Time of Shipment: before May 25, 2018
B.
Time of Shipment: in 20 days after the seller’s receipt of the L/C
C.
Time of Shipment: on June 15, 2018
D.
Time of Shipment: from July 10 to July 25, 2018
【多选题】图中立体图和牙膏软管均有倒影,以下关于倒影的说法正确的是()
【简答题】编写STM32程序,要求串口每1秒输出一个字符,依次输出0~9字符,通过按键K1触发中断服务程序暂停输出。 a)串口发送引脚为?接收引脚为?波特率为?停止位为?奇偶校验位为?写出配置串口完整代码。 b)串口发送通过重定向功能实现,写出重定向fputc函数代码。 c)K1引脚为?EXTI配置中指明了使用哪个引脚外触发外部中断,指明了中断的触发模式,分别写出各一行代码。 d)写出分别配置优先级分组、配...
【多选题】在以下规定装运时间(Time of Shipment)的合同条款中,____________是一种错误的规定方法。
A.
Time of Shipment: in May, 2018
B.
Time of Shipment: in 20 days after the seller’s receipt of the L/C
C.
Time of Shipment: from July 10 to July 25, 2018
D.
Time of Shipment: on June 15, 2018
E.
Time of Shipment: in March
F.
Time of Shipment: before May 25, 2018