水泥路面碎石化施工时,表面凹处在10cm×10cm以上的应利用()找平,以保证加铺沥青面层的平整度。
A.沥青混合料
B.密级配碎石
C.乳化沥青
D.水泥混凝土
参考答案:A
The Internet has become part of young people’s life. _1. _______ report shows that 38% of students often use the Internet. Most of them get _2.________ (use) information on the Internet _3._______ use the Internet to help with their studies. But many students don’t use it _4.________ a good way. Some play games too much, and some visit websites __5.__________ shouldn’t look at. So bad things may happen __6._________ students spend too much time on the Internet.
__7._______ is important for students to use the Internet properly. Now we have a textbook, __8._______ uses many examples to teach students some good ways to use the Internet. It gives useful __9._______(advise).
Some students also make friends on the Internet. But if you want to have a face-to-face _10.__ ______ (meet) with your online friends, please let your parents know and meet in a proper place.
专业技术人员呈现的绩效特征不包括?()
A、绩效行为难以监控
B、绩效成果难以衡量
C、绩效取得的团队协作性
D、绩效成绩非常微小