如应用超声流量计和密度计组合,对它们的输出再进行乘法运算以得出质量流量为直接式质量流量计。
A. 正确
B. 错误
The fact that it has become more onerous or more expensive for one party than he thought ()sufficient to bring about a frustration.
A. is not
B. is
C. will probably be
D. is one of the way by which it i
加强团结是做好各项工作的基础。你如果成为一个单位的领导,对搞好单位的团结有什么想法和打算?
在有铁垫板的直线及半径800m以上的曲线木枕地段钉道钉时,每根木枕上每股钢轨内外侧各钉一个道钉。
A. 正确
B. 错误