气体(或液体)通过时,吸附剂层()全部同时进行吸附。
A. 是
B. 不一定是
C. 不是
D. 与压力有关
用投资累计曲线(S形曲线)来进行投资偏差分析的方法是()。
A. 横道图法
B. 曲线法
C. 表格法
D. 折线法
轴流压缩机检查氮气罐压力0.50-0.70Mpa,氮气罐安全阀动作压力为()MPa。
A. 0.8
B. 0.85
C. 0.92
D. 0.95
Our starboard derrick boom of hatch No.4 is badly cracked()that it has become entirely useless.
A. at its goose neck to such a extent
B. at it's goose neck to such an extent
C. at it's goose neck for such a extent
D. at its goose neck to such an extent