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【简答题】
阅读下面短文,掌握其大意,然后从每题所给的A、B、C、D四个选项中选出最佳选项。 Last night I was driving from Harrisburg to Lewisburg, a distance of about 80 miles. It was late, I was late, and I was driving _________. At one point along an open highway, I came to a crossroads with a traffic light. I was _________ on the road by now, but as I came near the light, it turned _________, and I braked to a stop. I looked left, right, and behind me. Nothing. Not a car, no suggestion of headlights, _________ there I sat, waiting for the light to _________, the only human being, for at least a mile in any _________. I started wondering why I _________ to run the light. I was not afraid of being caught, because there was _________ no policeman anywhere around and there certainly would have been no _________ in going through it. Much later that _________, after I’d met with a group in Lewisburg and had climbed into bed near midnight, the question of why I’d stopped for that light _________ me. I think I stopped _________ it’s part of a contract(契约) we all have with each other. It’ s not only the law, but it’s an agreement we have, and we trust each other to follow _________: we don’t go through red lights. We do _________ we say we’ll do. We show up when we say we’ll show up. I was so _________ of myself for stopping for that red light. And as no one would ever have known what a good person I was on the road from Harrisburg to Lewisburg, I had to tell s someone. 小题1: A.fast B.slowly C.carefully D.hard 小题2: A.late B.alone C.worried D.afraid 小题3: A.green B.yellow C.red D.dark 小题4: A.and B.or C.so D.but 小题5: A.return B.change C.start D.continue 小题6: A.attention B.background C.direction D.information 小题7: A.refused B.decided C.prepared D.forgot 小题8: A.hardly B.luckily C.usually D.clearly 小题9: A.danger B.excuse C.space D.energy 小题10: A.moment B.night C.afternoon D.morning 小题11: A.depended on B.looked forward to C.stayed away from D.came back to 小题12: A.though B.unless C.because D.until 小题13: A.me B.it C.him D.us 小题14: A.what B.how C.why D.that 小题15: A.tired B.ready C.proud D.sorry
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【单选题】在如图所示OCL电路中,已知输入电压 为正弦波,三极管的饱和管压降 。V 1 、V 2 的作用是消除什么( )失真。
A.
截止
B.
饱和
C.
交越
D.
频率
【单选题】关于正当防卫与紧急避险的比较,下列哪一选项是正确的( )
A.
正当防卫中的不法“侵害”的范围与紧急避险中的“危险”相同
B.
对正当防卫中不法侵害是否“正在进行”的认定,与紧急避险中危险是否“正在发生”的认定相同
C.
对正当防卫中防卫行为“必要限度”的认定,与紧急避险中避险行为“必要限度”的认定相同
D.
若正当防卫需要防卫意图,则紧急避险也须具有避险意图
【单选题】在如图所示的 OCL 电路中,已知三极管的饱和管压降 U CES ≈ 0 ,输入电压 u i 为正弦波。 该电路负载上可能得到的最大输出功率 P om = 。
A.
16W
B.
1.6W
C.
8W
D.
0.8W
【判断题】成年男性平均感知电流有效值约为1.1mA。
A.
正确
B.
错误
【多选题】对于工频感知电流,实验表明()。
A.
成年男性平均感知电流有效值约为1mA,
B.
成年男性平均感知电流有效值约为1.1mA
C.
成年女性平均感知电流有效值约为0.6mA
D.
成年女性平均感知电流有效值约为0.7mA
E.
电流为50mA以上。
【简答题】感知电流 :指电流流过人体时可引起感觉的最小电流。感知电流的最小值称为感知阈值。成年男性平均感知电流约为 ( )mA( 有效值 ) ;成年女性约为 ( )mA
【多选题】对于工频感知电流,实验表明( )。
A.
成年男性平均感知电流有效值约为1mA
B.
成年男性平均感知电流有效值约为1.1mA
C.
成年女性平均感知电流有效值约为0.6mA
D.
成年男性平均感知电流有效值约为0.7mA
E.
电流为50mA以上。
【单选题】在如图所示OCL电路中,已知输入电压【图片】【图片】为正弦波,并且能提供足够大的幅值,使负载电阻RL上得到的最大输出功率【图片】;三极管的饱和管压降【图片】。最大输出功率【图片】=()。【图片】
A.
9W
B.
14 W
C.
18 W
D.
24 W
【单选题】成年男性平均感知电流有效值约为()mA?
A.
0.1
B.
0.7
C.
1
D.
1.1
【简答题】螺旋副的自锁条件为 。
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