80C51的（）作为串行口方式1和方式3的波特率发生器。
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患者，女，67岁。表现为脘腹冷痛，呕吐泄泻，舌淡，苔润，喜热饮，脉沉迟，治法方药为（）
A. 温里散寒，当归四逆汤
B. 温里散寒，理中汤
C. 温补阳气，右归丸
D. 温补阳气，当归四逆汤
E. 温补阳气，白虎汤
保险公司董事会秘书应当具有大学专科以上学历以及5年以上与其履行职责相适应的工作经历。
A. 正确
B. 错误
在EXCEL中每张表共有（）列。
A. 16
B. 256
C. 16384
D. 65535
Oil control rings used in two-stroke/cycle diesel engines are located near the bottom of the piston skirt in order to （）
A. increase the liner area covered by the oil film
B. maintain an oil film on the lower liner where scuffing is prevalent
C. keep excess oil away from intake and exhaust ports
D. help cushion piston skirt side thrust by providing a hydrodynamic oil wedge
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