【单选题】Everyone is encouraged to ___________ food or clothing for those who suffered a great deal in the flood.
【单选题】在共射、共基、共集三种基本放大电路中,希望既能放大电压,又能放大电流,应选用____;
【简答题】Sentence C heck 1 Circle the let t e r of the choice that best completes each sentence . 1. Police have to the public to come forward with any information which might help them in their inquiries. A. ...
【单选题】Children depend on their parents for food and _______.
【单选题】Suppose a consumer buys only food and clothing. If the quantity of food bought decreases while that of clothing remains the same, their marginal utility from food will:
A.
fall relative to the marginal utility of clothing.
B.
rise relative to the marginal utility of clothing.
C.
rise, but not as fast as their marginal utility of clothing rises.
D.
fall, but not as fast as their marginal utility of clothing falls.
【单选题】They can buy ______ and _______. A. B. food; clothing C.
【单选题】All ______ we need is to be supplied with food and clothing.
【简答题】Food and clothing are (universe)______human needs.
【单选题】在共射、共基、共集三种基本放大电路中,希望电路有电流跟随特性,可选用____
【单选题】在共射、共基、共集三种基本放大电路中,希望既能放大电压,又能放大电流,应选用____;