The utility function curve is convexed upwards, indicating that as<br/>the consumption of a certain commodity increases ( ) A: Increased marginal utility B: Increase in total utility C: Diminishing marginal utility D: Increase in average utility

Transportation<br/>provides which of the following utilities? A: Possession utility B: Place utility C: Time utility D: Both A and B

The difference between an invention patent and a utility model patent is (). A: Invention must be the proposal and innovation of new methods B: The utility model must be a product with shape and structure C: The creative requirements of utility model patents are lower than invention patents D: Some products cannot declare utility model patents

当多个图元同时在图形窗口中显示时，可通过打开某种图元类型编号来区分它们，打开编号显示的具体路径是 （ ）。 A: Utility Menu＞PlotCtrls＞Style B: Utility Menu＞Plot＞Multi-Plots C: Utility Menu＞Plot＞Replot D: Utility Menu＞PlotCtrls＞Numering

If a cup of coffee(c) and a cup of tea(t) always provide the same utility for Anne, her utility function could be written as U=min{t, c}.

Utility bills A: Buildings management B: Selling and distribution

7. In the market-driven economy, the company aims at the ______ of utility and benefits.

通过测评键盘软件（Keyboard Test Utility），可以（）

For what kind of preferences will the consumer be just as well-off facing a quantity tax as an income tax? A: Qusilinear utility function B: Cobb-Douglas utility function C: perfect substitutes D: perfect complements

______ is referred to energy release, conversion, storage and utility during material metabolism.