以下关于黏结力的说法哪项是错误的()
A.与技术操作有关
B.与黏结剂稠度成正比
C.与黏结剂厚度成反比
D.与黏结面积成正比
E.与黏结剂性能有关
参考答案:B
Zhang’s family _____ rather big and his family ______ fond of popular music. [ ]
A. is, are
B. is, is
C. are, is
D. are, are
MCS-51单片机定时器T1的溢出标志TF1,若计满数产生溢出时,如不用中断方式而用查询方式,则应()。
A.由硬件清零
B.由软件清零
C.由软件置于
D.可不处理