皮皮学，免费搜题
登录
搜题
【单选题】
某单片机应用系统由 AT89C51 单片机构成,若时钟频率为 6MHz 时,定时计数器 T0 工作于方式 1 ( 16 位定时计数器方式)时,需要定时 1ms ,则定时器的初值是()。A.
500
B.
1000
C.
2 16 -500
D.
2 16 -1000
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】惩罚与负强化就其功能来说，没有本质区别。（ ）
【单选题】How much to believe of what the other party tells you
A.
depends on the reputation of the other party.
B.
is affected by the circumstances of the negotiation.
C.
is related to how he or she treated you in the past.
D.
is the dilemma of trust.
E.
All of the above.
【单选题】If you believe damage has been caused by freezing, wait to ___ the tree until the spring to determine where and how much to cut.
A.
resign
B.
discard
C.
prune
D.
lessen
【简答题】How much water do many people believe they are supposed to drink daily?
【单选题】Companies believe there is a clear limit to how much people will pay for 'experience'.
A.
真
B.
假
C.
NOT GIVEN
相关题目：