根据下面的程序，画出产生的信号clk、phase_clk的波形如图所示`timescale 1ns/10ps module clk_tb2; reg clk; wire phase_clk; initialclk=0; always begin #5 clk=1; #5 clk=0; endassign #2 phase_clk=clk endmodule[img=314x94]17d603ead880b55.png[/img] （ ）

根据下面的程序，画出产生的信号clk、phase_clk的波形如图所示`timescale 1ns/10ps module clk_tb2; reg clk; wire phase_clk; initialclk=0; always begin #5 clk=1; #5 clk=0; endassign #2 phase_clk=clk endmodule<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202012/c171b55c15164ceabf263b09a3e3ab1b.png" /> （ ）

(多选题, 2分)时钟上升沿检测语句可以是？ A: CLK'EVENT AND CLK='1' B: CLK'EVENT AND CLK='0' AND CLK'LAST_VALUE='1' C: CLK'LAST_VALUE='1' AND CLK='0' D: RISING_EDGE(CLK) E: FALLING_EDGE(CLK) F: CLK'EVENT AND CLK='1' AND CLK'LAST_VALUE='0' G: CLK'LAST_VALUE='0' AND CLK='1'

Which of the following is not a CT phase of COVID-19? A: Early phase B: General phase C: Progressive phase D: Critical phase E: Resolutive phase

时钟信号CLK在进程中为敏感信号,可用于检测CLK上升沿的语句有 A: IF CLK'EVENT AND CLK=‘1’ B: IF CLK'EVENT AND CLK=‘0’ C: IF CLK=‘1’AND CLK'LAST_VALUE =‘0’ D: IF rising_edge(CLK) E: IF CLK=‘1’ F: wait until CLK=‘1’

CLK'EVENT AND CLK='1'表示CLK的 ( )

The first phase of the stress response, or General Adaptation<br/>Syndrome is called the ( ). A: Resistance phase B: Adaptation phase C: Alarm phase D: Fight-or-flight phase

下面对时钟上升沿检测的VHDL描述中，错误的是（ ）。 A: if clk’event and clk = ‘1’ then B: if falling_edge(clk) then C: if clk’event and clk’last value=‘1’ then D: if clk’ not stable and clk = ‘1’ then

在所列对时钟上升沿检测的VHDL描述中，错误的是（ ）。 A: if clk’event and clk = ‘1’ then B: if falling_edge(clk) then C: if clk’ not stable and clk = ‘1’ then D: if clk’event and clk’last value=‘1’ then

The three-phase composition of soil refers to solid phase, liquid phase and gas phase