【判断题】描述气体状态的参量可以分为宏观参量和微观参量。压强、体积和热力学温度T属于宏观量。
【单选题】听力原文:M: It looks like we are going to have a shower at any minute now. W: I think so too. Isn' t it strange how you cart sense it. M: I know what you mean. W: Look at the clouds in the sky. Whenever t...
A.
How to treat minor aches and pains.
B.
How to sharpen the senses.
C.
How to predict the weather.
D.
How to select a good umbrella.
【简答题】现有棉纱进口价20元,投入原棉15元, 国外增值V=5元。如果:(1)我国对绵纱进口征税10%,原棉进口也征10%;(2)对棉纱进口征税10%,原棉进口征20%,其它不变。请计算各自的有效保护率。
【判断题】门窗洞口网格布应加强,并在洞口角部沿60度方向加贴一块200*300mm的标准网布。
【单选题】门窗洞口网格布应加强,并在洞口角部沿( )度方向加贴一块200×300mm的标准网布。
【判断题】为保证船舶安全,海船在结构设计时只要保证防撞舱、机舱、货舱区域设双层底就可以了;