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【简答题】
当晶振为12MHz时,51单片机T0工作方式2最大定时时间为多少?
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】袋中装有大小和形状相同的小球若干个黑球和白球，且黑球和白球的个数比为４:３,从中任取2个球都是白球的概率为 现不放回从袋中摸取球，每次摸一球，直到取到白球时即终止，每个球在每一次被取出的机会是等可能的，用 表示取球终止时所需要的取球次数. （1）求袋中原有白球、黑球的个数； （2）求随机变量 的分布列和数学期望.
【简答题】Age has its special advantage in America. And one of the more impressive of them is the senior citizen discount. Anyone who has reached a certain age—in some cases as low as 55－is automatically entitl...
【简答题】Although the green movement is still in its early age, it has been______.
【多选题】（二） 张某与许某在A市共同兴办了合伙企业，从事运输劳务，双方出资比例为6：4。2012年的经营情况如下： (1)收取运费400万元（含保险费50万元，保险费和运费开在同一张发票上）； (2)运输成本250万元； (3)销售费用90万元，其中广告费85万元； (4)12月份为研究开发新产品购置测试仪器一台，价值6万元； (5)管理费用30万元，其中业务招待费2万元； (6)工资总额25.60万元（...
A.
收入400万元应缴纳营业税12万元
B.
研究开发新产品购置测试仪器一台，价值6万元，直接在税前扣除
C.
张某自有的小轿车发生的修理费、养路费由税务机关核定比例扣除
D.
2011年发生的亏损可以用合伙企业2012年的所得弥补
E.
合伙人的工资并入合伙企业的生产经营所得中计征个人所得税
【简答题】改错：Middle age has its compensations.Middle age has its compensations. Youth is bound hand and foot with the shackles of public opinion. Middle age enjoys .I remember that when i left the school...
【单选题】China has been considering raising the retirement age since 2008 to ________ its shrinking workforce and aging society.
A.
set off
B.
put off
C.
bring about
D.
cope with
【简答题】Passage Three Questions 31 to 35 are based on the following passage. Age has its privileges in America. And one of the more prominent of them is the senior citizen discount. Anyone who has reached a c...
【简答题】Ethiopia has greatly reduced its death rates for children under the age of five years during the last two decades, new UN statistics show. The report says Ethiopia has cut the number of child deaths, ...
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