男,52岁,呼吸困难伴咳嗽1年余,逐渐加重,无咳痰,轻度杵状指。HRCT示双侧中下肺毛玻璃状斑片影伴细网状影,考虑诊断为()
A. 支气管肺炎
B. 特发性肺间质纤维化
C. 肺泡痛肺炎型
D. 过敏性肺炎
E. 成人呼吸窘迫综合征
What is the purpose of assigning an IP address to a switch?()
A. Provides local hosts with a default gateway address
B. Allows remote management of the switch.
C. Allows the switch to respond to ARP requests between two hosts
D. Ensures that hosts on the same LAN can communicate with each other.
在减数分裂过程中,第一次分裂中不出现的是()
A. 四分体平分为二
B. 同源染色体分离
C. 非同源染色体的自由组合
D. 着丝点一分为二