【简答题】V带传动在运行时,受到了拉应力、离心应力和弯曲应力,最大应力发生在_____________。
【单选题】蜗轮的旋转方向( )。
C.
不仅与蜗杆的旋转方向有关,还与蜗杆的旋向有关
【单选题】When factor supply is fixed and quantity of the factor is graphed on the horizontal axis while factor price is graphed on the vertical axis, the factor:
A.
supply curve is horizontal.
B.
supply curve is vertical.
C.
supply curve slopes up to the right.
D.
demand curve slopes up to the right.
【简答题】蜗轮的旋转方向,不仅与蜗杆的()方向有关,而且还和蜗杆的()方向有关。 答文:
【单选题】耳前嚼肌区刀砍伤经清创后局部迅速肿大,有波动感、穿刺有清亮液体最可能的原因是:
【简答题】听下面一段对话,回答第1-2小题。 1. What is the matter with the woman? [ ] A. She can't find the subway station. B. She has missed the last bus. C. She has lost her way. 2. How does the man suggest the woman go ...
【简答题】The subway with the strongest sense of art in the world is in _______.
【单选题】左耳前嚼肌区刀砍伤经清创缝合后局部迅速肿大,有波动感、穿刺有清亮液体最可能的原因是 ( )
【单选题】Which of the following is not a factor that affects price elasticity of demand?
A.
The availability of substitutes
B.
The necessity of the product or service
C.
The duration of the price change
D.
The change in the number of units demanded
【单选题】According to the factor-price-equalization theorem, free trade equalizes:
A.
Product prices as well as the prices of individual factors of production between two countries.
B.
Product prices between two countries but not the prices of individual factors of production.
C.
Product prices between two countries and factor prices within each country but not between countries.
D.
Product prices and factor prices within each country but not between countries.