塑胶件喷油产生“桔皮”的原因是什么?
参考答案:
溶剂挥发太快;油漆流动性差;油漆粘度过高;喷油压力不足,雾化不良;喷枪距离及移动速度不当;气温太高或过早地进入高温炉烘干。
考来烯胺(消胆胺)是一种阴粒子交换树脂,口服不能吸收。临床用于降低血浆胆固醇的主要机制是()。
A.减少了胆固醇的吸收
B.减少组织细胞摄取胆固醇
C.促进胆固醇向胆汁酸转化
D.增加了胆固醇的排泄
E.降低了体内胆固醇的合成
Sometimes we have specific problems with our mother; sometimes, life with her can just be hard work. If there are difficulties in your (1) , it’s best to deal with them, (2) remember that any (3) should be done (4) person or by letter. The telephone is not a good (5) because it is too easy (6) either side to (7) the conversation.
Explain to her (8) you find difficult in your relationship and then (9) some new arrangements that you think would establish a (10) balance between you. Sometimes we hold (11) from establishing such boundaries because we are afraid that doing (12) implies we are (13) her. We need to remember that being (14) from our mother does not (15) mean that we no longer love her. If the conflict is (16) and you cannot find a way to (17) it, you might decide to give up your relationship with your mother for a while. Some of my patients had (18) "trial separations". The (19) allowed things to simmer down, enabling (20) .
(14)()
A.harmonious
B.wholesome
C.malignant
D.independent