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【单选题】
我国古代第一部字典是()。A.
《诗经》
B.
《说》
C.
《四书》
D.
《周易》
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皮皮学刷刷变学霸
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【简答题】数据库是存放数据的仓库,是指存放在计算机内、有组织、可共享的( )。数据库包含了相关的表、 视图 、索引、存储过程、与数据库安全性有关的控制机制及其它对象。
【单选题】A technician is testing a power supply for correct output voltages at the HDD power connector. Which of the following voltages should the technician expect for a correctly working power supply?（）
A.
6V
B.
9V
C.
12V
D.
24V
【简答题】数据Data是描述事物的标记符号,在日常生活中无处不在。()是指存放数据的仓库,只不过这个仓库是在计算机存储设备上,且数据是按一定的格式或规则存放。
【简答题】数据库是存放数据的仓库,是指存放在计算机内、有组织、可共享的( )。数据库包含了相关的表、( )、索引、存储过程、与数据库安全性有关的控制机制及其它对象。
【单选题】The way to change the running direction of ac motor and adjust the power supply is
A.
Series resistance with rotor winding
B.
Series resistance with stator
C.
Adjust phase sequence of three-phase power supply
D.
Adjust the phase sequence of two phases in the three-phase power supply
【单选题】The technician has replaced a power supply with an identical power supply, and now the high end graphics card is not working. Which of the following should the technician check?（）
A.
The memory
B.
The CMOS battery
C.
The PCIe power jack
D.
The processor for chip creep
【简答题】作业练习册: 1、”动能定理“部分:三、计算题:第7,8题 2、”动力学普遍定理的综合应用“:一、填空题:第1,2题;二、计算题:第1,2,3,4,5题 本次作业是重点内容,请同学们认真完成作业。
【单选题】_____shall be continuously powered and shall have an automatic changeover to a standby power supply in case of loss of normal power supply.
A.
Cooling system
B.
Alarm system
C.
The air conditioning installation
D.
The mooting equipment
【单选题】（） shall be continuously powered and shall have an automatic changeover to a stand by power supply in case of loss of normal power supply.
A.
Cooling system
B.
Alarm system
C.
The air conditioning installation
D.
The mooring equipment
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