第18题: [单项选择]From 1965 to 1978 American consumer prices increased at an average annual rate of 5.7 percent. This ominous shift was followed by consumer price gains of 13.3 percent in 1979. A. promising B. overwhelming C. threatening D. astonishing 参考答案:C
第30题: [单项选择]RPI卡环组成中各部分所指的是: A. R指远中支托,P指近中邻面板,I指杆式卡环 B. P指远中支托,R指远中邻面板,I指杆式卡环 C. R指近中支托,P指近中邻面板,I指杆式卡环 D. R指近中支托,P指远中邻面板,I指杆式卡环 E. P指近中支托,R指远中邻面板,I指杆式卡环 参考答案:D 答案解析:RPI卡环组成中各部分所指的是R指近中支托,P指远中邻面板,I指杆式卡环。