影响结蜡的因素有油井的开采条件和()、压力、油气比和产量。
A、强度
B、冷度
C、热度
D、温度
参考答案:D
Don't get _____ about the dress----- there's only a little mud spot on it.[ ]
A. curious
B. upset
C. excited
D. doubtful
紫外光,可见光,红外光波长范围?