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【多选题】
在怠速工况下测量进气管真空度，若真空表指针在45～58kPa摆动，但摆动幅度较大，则说明（）。A.
配气相位错位（滞后）
B.
点火时间过迟
C.
配气相位错位（提前）
D.
点火时间过早
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】What is the author's attitude toward the claims made by advocates of health foods?
A.
Very enthusiastic.
B.
Somewhat favorable.
C.
Neutral.
D.
Skeptical.
【简答题】According to the author, what made modern Olympics resume its prosperity ?
【判断题】雷达测角的基本原理是利用雷达天线波束的方向性来完成的。显然，雷达天线方位波束宽度越宽，则测量方位角精度越高；俯仰波束宽度越宽，测量俯仰角精度越高。
A.
正确
B.
错误
【单选题】The author thinks that the efforts made by the anxious to cultivate what they believe is good English are
A.
worthwhile.
B.
meaningless.
C.
praiseworthy.
D.
irrational.
【多选题】雷达测角的基本原理是利用雷达天线波束的 来完成的。对于两座标雷达而言，天线方位波束宽度越窄，则测量方位角精度越 ； 波束宽度越宽，测量俯仰角精度越差。
A.
方向性
B.
高
C.
俯仰
【判断题】雷达测角的基本原理是利用雷达天线波束的方向性来完成的。显然，雷达天线方位波束宽度越窄，则测量方位角精度越高；俯仰波束宽度越窄，测量俯仰角精度越高。
A.
正确
B.
错误
【单选题】According to the author, what made the Japanese young people feel doubt about their personal sacrifices?
A.
The foreigner's praise.
B.
The rapid development of Japanese economy.
C.
The coming of age of the postwar baby boom.
D.
The social progress.
【单选题】What is the author's attitude toward the claims made by advocates of health foods?
A.
very enthusiastic.
B.
somewhat favorable.
C.
neutral.
D.
skeptical.
【单选题】What happened between Susie and her mother______.
A.
made the author feel ashamed
B.
taught the author a good moral lesson
C.
left no great impression on the author
D.
provided the author with a new idea
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