Paragraph 4 tells us that _________.
Paragraph 4 tells us that _________.
电路如图所示，已知us(t)=4ε(t)V，求：
电路如图所示，已知us(t)=4ε(t)V，求：
把图 1 所示的电路用图 2 所示的等效电压源代替，则等效电压源的参数为 ( )。[img=514x251]18037b09233118d.jpg[/img] A: US = 4 V，R = 2 Ω B: US = 1 V，R = 0.5 Ω C: US = -1 V，R = 0.5 Ω D: US = -4 V，R = 0.5 Ω
把图 1 所示的电路用图 2 所示的等效电压源代替，则等效电压源的参数为 ( )。[img=514x251]18037b09233118d.jpg[/img] A: US = 4 V，R = 2 Ω B: US = 1 V，R = 0.5 Ω C: US = -1 V，R = 0.5 Ω D: US = -4 V，R = 0.5 Ω
The US Constitution was officially adopted on March 4, ______. A: 1776 B: 1781 C: 1787 D: 1789
The US Constitution was officially adopted on March 4, ______. A: 1776 B: 1781 C: 1787 D: 1789
Now it’s 4:50 already, and the rain (pour) down like this. They must be waiting for us impatiently.
Now it’s 4:50 already, and the rain (pour) down like this. They must be waiting for us impatiently.
已知Uc=8V,则Us=() A: 8V B: 4√2V C: 8√2V D: 12V
已知Uc=8V,则Us=() A: 8V B: 4√2V C: 8√2V D: 12V
<p>( )指令是MCS-51指令系统中执行时间最长且长达4 us的。</p>
<p>( )指令是MCS-51指令系统中执行时间最长且长达4 us的。</p>
智慧职教: ( )指令是MCS-51指令系统中执行时间最长且长达4 us的
智慧职教: ( )指令是MCS-51指令系统中执行时间最长且长达4 us的
Are there enough books for ____? A: three us B: us three C: all us D: the three us
Are there enough books for ____? A: three us B: us three C: all us D: the three us
______ agrees to your plan. A: Anyone of us B: No one of us C: None of us D: Someone of us
______ agrees to your plan. A: Anyone of us B: No one of us C: None of us D: Someone of us