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【单选题】
十进制计数器最高位输出的周期是输入 CP 脉冲周期的 10 倍。 A 正确 B 错误
A.
A
B.
B
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【单选题】Chartered companies were NOT granted the ______ by the British King or Queen.
A.
economic rights
B.
political authority
C.
judicial authority
D.
diplomatic authority
【单选题】42下列屋顶中,级别最高的是( )
A.
重檐庑殿顶
B.
重檐歇山顶
C.
单檐庑殿顶
D.
单檐歇山顶
【单选题】A grindstone increases in angular speed from 4.00 rad/s to 12.00 rad/s in 4.00 s. Through what angle does it turn during that time interval if the angular acceleration is constant?
A.
8.00 rad
B.
12.0 rad
C.
16.0 rad
D.
32.0 rad
【单选题】Chartered companies were NOT granted the _____ by the British King or Queen.
A.
Political authority
B.
judicial authority
C.
economic rights
D.
diplomatic authority
【多选题】关于 REVOKE 语句,下列说法中正确的包括( )。
A.
一条 REVOKE 语句可同时回收多个用户的多个权限
B.
一条 REVOKE 语句只能回收一个用户的一个权限
C.
若指定 RESTRICT, 则不能回收已转授的权限
D.
若指定 CASCADE, 则同时回收所有已转授的权限
【判断题】revoke语句用于授权
A.
正确
B.
错误
【简答题】The scientific definition of “1 meter” is: the length of the path travelled by light in vacuum during a time interval of _______________ seconds.
【单选题】The gravitational force exerted by the Sun on the Earth holds the Earth in an orbit around the Sun. Let us assume that the orbit is perfectly circular. The work done by this gravitational force during...
A.
zero
B.
positive
C.
negative
D.
impossible to determine
【单选题】( )是衡量一个基金经营业绩的主要指标,也是基金份额交易价格的内在价值和计算依据。
A.
基金资产总值
B.
基金资产净值
C.
基金份额净值
D.
基金资产估值
【单选题】The time interval between two adjacent spikes in the nerve fiber should be at least greater than
A.
Relative refractory period
B.
Absolute refractory period
C.
Supernormal period
D.
Absolute refractory period plus relative refractory period
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