You purchase a new computer system that does not have wireless capability, and then you decide that you want to use a wireless connection to the Internet. What are the least expensive ways (pick two) to upgrade your system to wireless?
A. Purchase a second computer that has wireless
B. Purchase a wireless expansion card and install it in your system
C. Trade in the computer for another computer that has wireless installed
D. Purchase a USB wireless adapter and connect it to your PC by way of a USB port
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When working on a computer, which of the following best protects against ESD? Why?
Always work on a computer in a room without carpet
B. Always sit a computer on an antistatic mat when working on it
C. Always wear a ground bracelet clipped to the side of the case
D. Always touch the computer case before touching a circuit board inside the case
Which of the following display interface can only transfer data in analog signal?
A. VGA
B. Display Port
C. HDMI
DVI
下列哪项不是精神疾病患者发生噎食的原因，患者服用抗精神病药出现锥体外系不良反应，引起吞咽肌肉运动不协调
A. 进食过多
B. 吞咽反射
C. 癫痫患者在进食时抽搐发作也可能导致噎食
D. 抢食或进食过急
E. 帕金森综合征的患者，吞咽反射迟钝
F. 无
影响孩子不能去安慰悲伤他人的因素有
A. 抑制性气质，
B. 同情式唤起，
C. 自我定向的悲伤，
D. 感知的责任
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