家在海南的小刚说“我们那里经常下雨”;家在新疆的阿依古丽说“我们那里下雨很少”导致两地降水差异的主要因素是[ ]
A、纬度因素
B、地形因素
C、海陆因素
D、洋流因素
答案:C
— What ______ your bike yesterday?
— It didn't work. [ ]
A. was happened in
B. happened in
C. was happened to
D. happened to
加气机预冷温度的设定:根据储罐内液体实际情况,此温度一般设定为()。
A、(-120~-130)°C
B、(-130~-135)°C
C、(-135~-140)°C
D、(-140~-145)°C