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

18.A) Bus 7.B) Bus 70.C) Bus 17.D) Bus 20. A: Bus 7. B: Bus 70. C: Bus 17. D: Bus 20.

My cousin always _______ to school. A: by bus B: by a bus C: take a bus D: takes a bus

Be careful! ______ ! A: The bus comes here B: Here comes the bus C: The bus here is D: There is the bus

BUS(Bus bar)

They are waiting ___ a bus ___ the bus stop.

The 89C51 extension parallel three bus refers to the address bus, the data bus and

10. A) Bus No. 18. B) Bus No. 80. C) Bus No. 89. D) Bus No. 98.

"OK, there ______, it"s time for you to leave". A: comes the bus B: the bus comes C: came the bus D: the bus come