皮皮学，免费搜题
登录
搜题
【简答题】
3-9 常用溶剂的性质和分类。 按溶剂发挥氢键给体作用的能力分为:质子性溶剂和非质子性溶剂。质子性 溶剂含有易取代氢原子,通过氢键产生溶剂化作用,是极性溶剂。非质子性溶剂 不含易取代的氢原子,主要是靠偶极矩或力的相互作用而产生溶剂化作 用,又分为极性非质子溶剂 和非极性非质子溶剂。
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Which statement is true about import and export routing policies?（）
A.
Import policies concern routes received and determine which routes get put into the routing table.
B.
Export policies concern routes received and determine which routes get put into the routing table.
C.
Export policies are applied before the routing table.
D.
Import polices are applied after the routing table.
【单选题】Choose the best answer to complete each of the sentences. He was not really in the mood for anything ______ it dawned on him that it had not been his fault.
A.
since
B.
once
C.
after
D.
until
【简答题】指出:“治理和管理一字之差,体现的是系统治理、依法治理、源头治理、综合施策。”坚持系统治理,加强党委领导,发挥政府(),鼓励和支持社会各方面参与。
【多选题】Which two of these are characteristics of multicast routing？ （）
A.
multicast routing uses RPF
B.
multicast routing is connectionless.
C.
In multicast routing， the source of a packet is known.
D.
When network topologies change， multicast distribution trees are not rebuilt， but use the originalpath
E.
Multicast routing is much like unicast routing， with the only difference being that it has a a groupof receivers rather than just one destination
【单选题】可逆反应A+B(s)→C达到平衡后,无论加压或降温,B的转化率都增大,则下列结论正确的是:
A.
A为气体,C为固体,正反应为放热反应
B.
A为固体,C为气体,正反应为放热反应
C.
A为气体,C为固体,正反应为吸热反应
D.
A、C均为气体,正反应为吸热反应
【单选题】The manager’s replay that he was not really interested in the project.
A.
offered
B.
showed
C.
advised
D.
described
【单选题】注册会计师在对被审计单位财务报表实施进一步审计程序时，检查了被审计单位销售发票副本上有关人员的签字，这一程序所属的测试类型为（ ）。
A.
控制测试
B.
实质性程序
C.
了解内部控制
D.
双重目的测试
相关题目：