发动机的混合气浓度高,充分润滑,能提高发动机的动力性。()
参考答案:错
In the eastern part of New Jersey ________, a major shipping and manufacturing center.
A.the city of Elizabeth lies there
B.around the city of Elizabeth lies
C.there lies the city of Elizabeth around
D.lies the city of Elizabeth
图为某地的等值线图,等值线的数值由北向南逐渐降低,若该图为等温线图,E所在区域为陆地;F所在区域为海洋,则该图表示()
A.北半球一月等温线
B.北半球七月等温线
C.南半球一月等温线
D.南半球七月等温线