瓷釉熔体具有尽量缩小表面面积的性能，这种性能称为表面张力。底釉的表面张力（）时对密着不利，面釉的表面张力（）时，瓷面容易产生纹路甚至烧缩
查看答案
Which statement about an estimated position is TRUE?（）
A. It is more reliable than a fix based on radar bearings
B. It may be based on a single LOP or questionable data
C. When a 3-LOP fix plots in a triangle，the center of the triangle is the estimated position
D. It is usually based on sounding
利用国际咨询机构预测目标市场国的政治风险时（）
A. 准确性高，费用低
B. 准确性低，费用高
C. 准确性高，费用高
D. 准确性低，费用低
微信支付 
支付宝支付