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【单选题】
According to the expectancy theory, motivation is high when people:A.
believe that high levels of effort lead to high performance and ultimately, to the attainment of the desired goals.
B.
perceive that they can satisfy their need for affiliation and need for achievement with minimum effort.
C.
perceive that their own outcome–input ratio is less than that of referents.
D.
are set specific and challenging goals which help them focus their inputs in the right direction.
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举一反三
【单选题】在应用系统中,芯片内没有锁存器的 D/A 转换器,不能直接接到 80C51 的 P0 口上使用,这是因为 ( )
A.
P0 口不具有锁存功能
B.
P0 口为地址数据复用
C.
P0 口不能输出数字量信号
D.
P0 口只能用做地址输出而不能用做数据输出
【简答题】That’s really a story.
【单选题】在应用系统中,芯片内没有锁存的D/A转换器不能直接连到MCU的P0口上使用。这是因为()
A.
P0口不具备锁存功能
B.
P0口为地址数据复用
C.
P0口不能输出数字量信号
D.
P0口只能作为地址输出而不能作为数据输出
【简答题】That’s really a big _____.