液压传动系统一般由动力部分、控制部分、执行部分及辅助装置组成。在控制部分中，由各类压力、流量、方向等控制阀组成，用以实现对执行元件的（）。

A.运动速度、运动方向控制

B.控制作用力

C.液压能转化成机械能

D.过载保护、程序控制

Consider the following statements: Statement 1: "The kinked demand curve model of oligopoly assumes that a decrease in price will not be followed by other firms in the industry, but a price increase will. " Statement 2: "Finns in monopolistic competition have high advertising expenses because they want to create the perception that their product is different from their competitors’ products when the competing products are actually quite similar. " Which of the following best describes the accuracy of these statementsStatement 1Statement 2 （）①A. Correct Incorrect ②B. Incorrect Correct ③C. Correct Correct

A. ①

B. ②

C. ③