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【多选题】
术前访视内容包括（）A.
掌握患者的生理、社会、心理状态
B.
消除患者对麻醉、手术紧张感
C.
减轻患者的焦虑
D.
减少患者心理负担
E.
促进患能平和积极地配合手术治疗
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皮皮学刷刷变学霸
举一反三
【简答题】已知力F沿直线AB作用，其中一个分力的作用线与AB成45°角，若欲使另一个分力的大小在所有分力中为最小，则此二力间的夹角为 °。
【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 wr...
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.
【单选题】Refer to the circuit and waveforms in Figure 8-2. What value is stored in the register at the end of the fourth clock cycle?
A.
1 0 1 0
B.
0 1 1 0
C.
0 1 0 1
D.
0 0 0 0
【简答题】Refer to the circuit of the figure, the power delivered by the independent source is P = _____ W .
【单选题】已知力F沿直线AB作用，其中一个分力的作用线与AB成45°角，若欲使另一个分力的大小在所有分力中为最小，则此二力间的夹角为（ ）°。
A.
45
B.
90
C.
180
D.
0
【单选题】Refer to the circuit and waveforms in Figure 8-2. What value is stored in the register at time 'X'?
A.
0 1 0 1
B.
1 1 1 0
C.
0 1 1 1
D.
0 1 1 0
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