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【单选题】
两根圆轴受扭，材料相同，受力相同，而直径不同，当d1=d2/2 时，则两轴的最大剪应力之比τ1/τ2为（ ）。A.
1/4
B.
1/8
C.
8
D.
4
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举一反三
【简答题】茶叶审评室主要由干评台、_____________、备水台、清洁台四部分构成。
【简答题】下位学习
【单选题】Smoking, which may be _______ for some people, can cause great ______ to our health. [ ]
A.
fun; destroy
B.
fun; damage
C.
a fun; harm
D.
a fun; hurt
【单选题】The government's present value budget constraint states that
A.
taxes must equal government spending in each period.
B.
the present value of government spending must be equal to the present value of consumers' disposable incomes.
C.
the present value of government spending must be equal to the present value of taxes.
D.
the government may run deficits each and every year, as long as the deficits are sufficiently small.
【简答题】调整现值法(adjusted present value)
【简答题】现值系数(present value factor)
【简答题】某32位计算机采用二级页表的分页存储管理方式,按字节编址,页大小为4KB,页表项大小为4B。某进程的页表内容如图所示,图中的数字为十进制。请回答以下问题: (1) 逻辑地址结构中,页内地址占___位,二级页号(外层业内地址)占____位,一级页号(外层页号)占______位。 (2) 计算十六进制逻辑地址00402FA5对应的十六进制物理地址。
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