【判断题】在一般情况下,两曲面体的相贯线是封闭的空间折线。
【单选题】Which of the followings are true about the terms of trade?
A.
also called exchang value
B.
the value is less than 100 when trade conditions better
C.
the value is greater than 100 when tade conditions better
D.
also called trade terms
【判断题】蔗糖在酸的作用下能水解转化为葡萄糖与果糖,即转化糖,含有转化糖的水溶液称为转化糖浆。
【单选题】以下有关AutoCAD中块速文字命令“qtext”的叙述错误的是
【判断题】焊条电弧焊时,焊接速度对焊道形状影响最大。
【单选题】The terms of trade is given by the prices:
A.
Paid for all goods imported by the home country
B.
Received for all goods exported by the home country
C.
Received for exports and paid for imports
D.
Of primary products as opposed to manufactured products
【单选题】The terms of trade is given by:
A.
(Price of exports/price of imports) − 100
B.
(Price of exports/price of imports) + 100
C.
(Price of exports/price of imports) ÷ 100
D.
(Price of exports/price of imports) × 100
【简答题】蔗糖在酸的作用下能水解为葡萄糖与(),这种变化成为转化。一分子的葡萄糖与一分子的果糖的结合体称为转化糖,含有转化糖的水溶液称为转化糖浆。