【单选题】分析下段代码输出结果是 var t = 10; function test(test){ t = t + test; var t = 3; console.log(t); } test(t);
【简答题】AT89S52单片机有 个脚,其中第40脚和第20脚分别为 和 ,31脚为 ,18、19脚外接 而构成振荡系统,为保持时钟标准,外接两只 作为补偿。
【判断题】1623年的英国垄断法案,确立了近代意义的专利制度。
【单选题】From 'Mike Horan's words, we can know that the fire fighters themselves ______.
A.
are being taken care of by the computers
B.
have been saved by the computers many times
C.
always get hurt in saving people's lives
D.
are trying hard to stop a fire burning