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2021-04-14

答案：

铅汞镉
 

0
在力法方程中，称为，表示，称为，表示。/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif
1
6．合理的刀具耐用度包括与两种。/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif
2
所谓交流负反馈是指的反馈。（A．放大倍数为负数， B．变小，C．变大。）/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif
3
( )2.H2（g）的ΔfH就是H2O（g）的ΔfH。/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif
4
下列说法哪些是正确的 · A.执行构件所受的生产阻力可以是常数，或是速度、时间、位置的函数 · B. · C.无关 · D./js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif/js/editor20150812/themes/default/images/spacer.gif