【单选题】假设某计算机具有1MB的内存,并按字节编址,为了能存取该内存各地址的内容,其地址寄存器至少需要二进制(33)位。为使4字节组成的字能从存储器中一次读出,要求存放在存储器中的字边界对齐,一个字的地址码应(34)。若存储周期为200 ns,且每个周期可访问4个字节,则该存储器带宽为(35)b/s。假如程序员可用的存储空间为4MB,则程序员所用的地址为(36),而真正防问内存的地址称为(37)。
【单选题】My friend told me that ( ).
A.
the English language is difficult
C.
the English is difficult
D.
what English is difficult
【单选题】My best friend told me that he wasn’t used to ______ by plane and he used to ______ uncomfortable.
【判断题】动机是推动人行为的直接动力,是需要和行为的中介
【单选题】My friend told me it would be months _________ his family settled down in that city.
【判断题】岩石抗冻性是评价岩石风化稳定性的重要指标,一般只用抗冻系数来表征。