主页
学科
搜索
账户
常见问题
当前学科:聚乙烯装置操作工
题目:
单选
催化剂注入管发生堵塞的处理方式主要是()。
A . 拆除管线清理
B . 提高压差
C . 减少催化剂量
D . 均可以
答案:
<查看本题扣1积分>
查看答案
答案不对?请尝试站内搜索
推荐知识点:
若要在调用过程后通过参数返回两个结果,下面过程定义语句中,正确的语句是( )。
男性,24岁,一年前诊断肾病综合征,应用激素治疗4周,尿蛋白转阴后减量,治疗共8周,停药已半年,近一个月来又出现水肿,尿蛋白(+++),应首选()
钎焊温度过高,保温时间过(),易导致母材被溶蚀。
反应物能同时进行两个或两个以上的反应,称为平行反应。()
性别意识的萌发出现在()
简述调频与解调的原理和目的。
塑造概念有三个重心,它们是()、技能和系统。
2017年8月,小王将其位于北京的住房出租给小李,每个月向小李收取租金6000元,小王出租该房屋每个月应缴纳的增值税为()元。
两个变量之间的关系近似地表现为一条直线,则称两个变量之间为()。
The easy way out isn’t always easiest. I learned that lesson when I decided to treat Doug, my husband of one month, to a special meal. I glanced through my cook book and chose a menu which included homemade bread. Knowing the bread would take time. I started on it as soon as Doug left for work. As I was not experienced in cooking, I thought if a dozen was good, two dozen would be better, so I doubled everything. As Doug loved oranges, I also opened a can of orange and poured it all into the bowl. Soon there was a sticky dough covered with ugly yellowish marks. Realizing I had been defeated, I put the dough in the rubbish bin outside so I wouldn’t have to face Doug laughing at my work. I went on preparing the rest of the meal, and, when Doug got home, we sat down to Cornish chicken with rice. He tried to enjoy the meal but seemed disturbed. Twice he got up and went outside, saying he thought he heard a noise. The third time he left, I went to the windows to see what he was doing. Looking out, I saw Doug standing about three feet from the rubbish bin, holding the lid up with a stick and looking into the container. When I came out of the house, he dropped the stick and explained that there was something alive in out rubbish bin. Picking up the stick again, he held the lid up enough for me to see. I felt cold. But I stepped closer and looked harder. Without doubt it was my work. The hot sun had caused the dough to double in size and the fermenting yeast made the surface shake and sigh as though it were breathing. I had to admit what the living thing was and why it was there. I don't know who was more embarrassed by the whole thing—Doug or me. When Doug went out the third time, the woman looked out of the window because she was()