配戴角膜塑形接触镜角膜曲率检测,I类适应症,角膜平曲率焦值为()。
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博士试验规定是观察()试样和()亚铅酸钠溶液的混合溶液外观的变化。
A. 10m5mL
B. 10m10mL
C. 5m10mL
D. 5m5mL
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to ().
A. Mention signal stations and ice,storm,traffic and port signals
B. Give the international numbers of lights
C. Give the correction of the lights and fog signals
D. Give the information on the lights and fog signal
高速铁路硬横梁应呈水平状态,允许向上微拱,铰接硬横梁的挠度小于梁长的(),刚接硬横梁的挠度小于梁长的1/360。
A. 2%
B. 1.5%
C. 1%
D. 0.5%
BTS软件装载流程中,为加快软件装载速度,加载时BSC连续发送()个Load_Data_Segment(数据段装载)后,BTS发送Load_Data_Segment_Ack对最后一个数据段装载进行确认,BSC收到确认消息后,再继续发送。
A. 2
B. 4
C. 5
D. 6