砂的体积随含水率的变化而变化,当含水率为()时,其体积最大。
A.3%~5%
B.5%~7%
C.7%~9%
D.10%~12%
参考答案:B
My daughter is much ______ now. The trousers she wore last year are already too short for her.
A.higher
B.longer
C.taller
D.older
8086/8088CPU的内部结构由()组成。
A.ALU、EU、BIU
B.寄存器组、ALU
C.EU、BIU
D.ALU、BIU、地址加法器