In Verilog HDL, which option is the correct interpretation of the following statement? assign bus [7:4] = {bus [0], bus [1], bus[2], bus[3] } ; A: bus[0], bus[1], bus[2] and bus[3] are assigned to bus[4], bus[5], bus[6] and bus[7] respectively B: bus[0], bus[1], bus[2] and bus[3] are assigned to bus[7], bus[6], bus[5] and bus[4] respectively C: The values of bus[0], bus[1], bus[2] and bus[3] remain unchanged D: All the values of bus[0], bus[1], bus[2] and bus[3] become binary 0

Verilog HDL中，下面语句的正确解释是：（）assign bus [7:4] = {bus [0], bus [1], bus[2], bus[3] } ; A: bus[0]、bus[1]、bus[2]、bus[3]分别赋值给bus[4]、bus[5]、bus[6]、bus[7] B: bus[0]、bus[1]、bus[2]、bus[3]分别赋值给bus[7]、bus[6]、bus[5]、bus[4] C: bus[0]、bus[1]、bus[2]和bus[3]的值保持不变 D: bus[0]、bus[1]、bus[2]和bus[3]的值均变为二进制0

• From the airport: If you are in a hurry, you can take a taxi. It will take you (1) _________________, and the fare is about (2) ________. Or you can take the airport bus. It runs (3) __________________and the fare is (4) ____. • From the railway station: If you want to take the bus, (5)__________________________ . Alternatively, a taxi is also fine (time:(6)___________________ ; fare: (7) )_______.• Arriving by bus: Near the school, there is No. (8)________bus. After getting off the bus,(9) ____________. Then you’ll find the school.

正常情况下，IES由谁提供主输入电源？（） A: DC BUS 1 B: DC BUS 2 C: DC ESS BUS 1 D: DC ESS BUS 2

He goes to work by _________ every day. A: the bus B: buses C: a bus D: bus