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【单选题】
Refer to Figure 12. The circuit is used to derive a 60 Hz reference for a digital clock. After running for 24 hours the clock appears to be running 2 minutes and 18 seconds slow. What appears to be wrong with the circuit?A.
The error is very small and is to be expected of a circuit of this type; the clock should be regularly reset.
B.
The modulus of the counter has decreased, causing the counter to produce a lower output reference signal for the clock.
C.
The modulus of the counter has increased, causing a drop in the output frequency of the counter.
D.
The XTAL OSC is probably cooling off too much at night and consequently slowing down;the XTAL OSC should be temperature compensated.
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【多选题】贯彻新发展理念，建设现代化经济体系，主要包括( )。
A.
深化供给侧结构性改革
B.
加快建设创新型国家
C.
实施乡村振兴战略
D.
实施区域协调发展战略
E.
加快完善社会主义市场经济体制
F.
推动形成全面开放新格局
【单选题】已知i为虚数单位，则复数 3-2i 2+i =（ ）
A.
4 5 + 7 5 i
B.
- 4 5 + 7 5 i
C.
4 5 - 7 5 i
D.
- 4 5 - 7 5 i
【单选题】Anti- virus software protects your computer from viruses by(75)your computer's memory and disk devices.
A.
deleting
B.
changing
C.
scanning
D.
replacing
【简答题】下列不属于贯彻新发展理念，建设现代化经济体系要求的是()。 A深化供给侧结构性改革 B加快建设创新型国家 C深化机构和行制改革 D加快完善社会主义市场经济体制
【单选题】.– I’m sorry I broke your coffee cup. -- Oh, really? _________.
A.
It doesn’t matter
B.
I don’t know
C.
it’s OK with me
D.
You’re welcome
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