清朝时期推行“闭关锁国”’政策，其根本原因是（）A.只希望官方获利 B.防止不法商人

（2009年）关于停止执行死刑的程序，下列哪一选项是正确的？（　）

A．下级法院接到最高法院执行死刑的命令后，执行前发现具有法定停止执行情形的，应当暂停执行并直接将请求停止执行报告及相关材料报最高法院

B．最高法院审查下级法院报送的停止执行死刑报告后，应当作出下级法院停止或继续执行死刑的裁定

C．下级法院停止执行后，可以自行调查核实，也可以与有关部门一同对相关情况进行调查核实

D．下级法院停止执行并会同有关部门调查或自行调查后，应当迅速将调查结果直接报最高法院

成本法的理论依据是()。

A.成本理论 

B.替代理论 

C.高等价交换理论 

D.生产费用价值理论

We know a computer is a machine that processes data (stored in main memory) into information, under control of a stored program. We also know that, internally, a computer is a binary machine; thus the data and the program instruictions must be stored in binary form. Characters are represented in (71) . Numbers are stored as binary numbers, with each bit’s positional value significant. A computer’s main memory is divided into bytes, words or both (depending on the system), and each of these basic storage units is assigned an (72) . Using this address, the processor can read or write selected bytes or words.

The processor consists of a clock, an instruction control unit, an arithmetic and logic unit, and registers. Once a program is stored in main memory, the processor can begin to execute it. During (73) , the instruction control unit fetches an instruction from main memory; during (74) , the arithmetic and logic unit executes it. Precisely timed electronic pulses generated by the clock drive this basic (75)

（73）处填（）。

A．E-time

B．I-time

C．cycle time

D．run time

戏剧按照结构和规模的不同，可分为（）

A.独幕剧

B.多幕剧

C.双幕剧

D.三幕剧

被磁化的铁磁物质离开磁铁后仍保留一定的磁性，称之为（）。