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【简答题】
S1:What is the range scale of the echo sounder? S2:Echo sounder is at 10 meters range scale. Q:What are they talking about? A. The radar system of the ship. B. The communication system onboard. C. The echo sounder of the ship. D. The ECDIS of the ship.
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【判断题】Six races are officially recognized: White; American Indian and Alaska Native; Asian; African American; Native Hawaiian and Other Pacific Islander; and People of two or more races.
A.
正确
B.
错误
【单选题】计算机的技术性能指标主要是指
A.
计算机的可靠性、可维性和可用性
B.
字长、主频、运算速度、内/外存容量
C.
显示器的分辨率、打印机的性能等配置
D.
计算机所配备的程序设计语言、操作系统、外部设
【判断题】Six races are officially recognized: White; American Indian and Alaska Native; Asian; African American; Native Hawaiian and Other Pacific Islander; and People of two or more races.
A.
正确
B.
错误
【判断题】Six races are officially recognized: White; American Indian and Alaska Native; Asian; African American; Native Hawaiian and Other Pacific Islander; and People of two or more races.
A.
正确
B.
错误
【单选题】计算机的技术性能指标主要是指
A.
显示器的分辨率、打印机的性能等配置
B.
计算机的可靠性、可维性和可用性
C.
字长、主频、运算速度、内/外存容量
D.
计算机所配备的程序设计语言、操作系统、外部设备
【单选题】若某点按s=8—2t2(s以m计，t以s计)的规律运动，则t=3 s时点经过的路程为( )。
A.
10 m
B.
8m
C.
18 m
D.
8 m～18 m以外的一个数值
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