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【单选题】
51单片机的定时器T1用做计数计数脉冲是( )
A.
由(P3.5)输入的外部计数脉冲
B.
外部计数脉冲由内部时钟频率提供
C.
由(P3.4)输入的外部计数脉冲
D.
由任意IO口输入的外部计数脉冲
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参考答案:
举一反三
【多选题】不能将遮罩的角点转化为曲线点的工具是哪个?
A.
删除节点工具
B.
转换点工具
C.
钢笔工具
D.
添加节点工具
【单选题】According to the passage, which of the following statements is NOT true?
A.
Baruch Spinoza wrote his first philosophical work before 1662.
B.
Baruch Spinoza gave priority to freedom of thought and speech.
C.
Baruch Spinoza thought one's actions should be controlled by God.
D.
Baruch Spinoza studied the doctrine identifying God with the universe.
【单选题】Baruch Spinoza was a Dutch philosopher and religious thinker who was born on November 24, 1632 in Amsterdam. His family was Spanish-Portuguese Jews who were refugees to Holland. Spinoza was taught his...
A.
Judaism
B.
rabbis
C.
synaxis
D.
synalgia
【单选题】对于大坡道,由于牵引功率限制,对于坡度60‰的坡段限长为
A.
300m
B.
500m
C.
400m
D.
320m
【单选题】第()代数控机床出现能进行人机对话式自动编制程序的数控装置。
A.
第三代数控
B.
第四代数控
C.
第五代数控
D.
第六代数控
【单选题】下列作品中,()不是舒伯特的艺术歌曲。
A.
《菩提树》
B.
《鳟鱼》
C.
《野玫瑰》
D.
《索尔维格之歌》
【判断题】按照电源方式分类,直流电机分为他励电机和自励电机。
A.
正确
B.
错误
【单选题】3.第()代数控机床出现能进行人机对话式自动编制程序的数控装置:
A.
第三代数控
B.
第四代数控
C.
第五代数控
D.
第六代数控
【单选题】Baruch Spinoza was a Dutch philosopher and religious thinker who was born on November 24, 1632 in Amsterdam. His family was Spanish-Portuguese Jews who were refugees to Holland. Spinoza was taught his...
A.
Judaism
B.
rabbis
C.
synaxis
D.
synalgia
【单选题】由于坡道阻力与坡度、列车牵引重量有关,所以一条铁路区段决定一台某一类型机车所能牵引的最大牵引重量是( )。
A.
机车最大牵引力
B.
坡度
C.
限制坡度
D.
机车功率
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