用螺纹量规检验螺纹,不能量出工件的实际尺寸,只能直观地判断被测螺纹是否合格。( )
参考答案:对
The smallest unit of information in a computer system is called a ______.
A.bit B.byte C.block D.file
治寒疝疼痛、睾丸偏坠等证,宜选用()
A.肉桂
B.小茴香
C.花椒
D.丁香
E.吴茱萸