使用JSS-4A型晶体三极管测试仪时,在电源开关未接通前,应将电压选择开关和电流选择开关放在最大量程。
参考答案:错
Jim sold most of his things. He has hardly left in the house. [ ]
A. anything
B. everything
C. nothing
D. something
在计算机硬件技术指标中,度量存储器空间大小的基本单位是( )。
A.字节(Byt
B.二进位(bi
C.字(Wor
D.双字(Double Wor