化油器式汽油机在节气门关闭时，进气管真空度很高，此时喉管的真空度（）。
参考答案：变大
After a few years development, Hai’an will surely a modern city. [ ]
A. grow into
B. make into
C. come up
D. grow up
如果游客晕船，若船是左右摇晃，则要改卧姿为横向平卧，然后闭目深呼吸。( )
