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【简答题】
Learning to use a computer is getting easier all the time because ________. A) programs are becoming less complicated B) programs are designed to be convenient to users C) programming is becoming easier and easier D) programs are becoming readily available to computer users
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反馈参考答案：
举一反三
【简答题】语音震颤减弱或消失和增强分别常见于哪些情况？
【单选题】患侧胸廓饱满，呼吸动度减弱或消失，气管移向健侧，语音震颤减弱或消失，叩诊呈实音，听诊呼吸音减弱或消失，无啰音，语音共振减弱或消失
A.
气胸
B.
胸腔积液
C.
胸膜增厚
D.
肺不张
E.
肺气肿 下列体征常见于哪种情况：
【单选题】患侧胸廓饱满，呼吸动度减弱，气管移向健侧，语音震颤减弱或消失，叩诊呈鼓音，呼吸音减弱或消失，无啰音，语音共振减弱或消失
A.
气胸
B.
胸腔积液
C.
胸膜增厚
D.
肺不张
E.
肺气肿 下列体征常见于哪种情况：
【单选题】If a switch receives a frame and the source MAC address is not in the MAC address table but the destination address is, what will the switch do with the frame?
A.
Discard it and send an error message back to the originating host
B.
Flood the network with the frame
C.
Add the source address and port to the MAC address table and forward the frame out the destination port
D.
Add the destination to the MAC address table and then forward the frame
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