【简答题】分子间氢键一般具有()性和()性,一般分子间形成氢键,物质的熔、沸点(),而分子内形成氢键,物质的熔、沸点往往()。
【简答题】分子间氢键一般具有 饱和 性和 方向 性,一般分子间形成氢键,物质的熔、沸点 (请填“增大”或“减小”) ,而分子内形成氢键,物质的熔、沸点往往 。
【简答题】分子间氢键一般具有______性和______性,一般分子间形成氢键,物质的熔、沸点______,而分子内形成氢键,物质的熔、沸点往往______。
【多选题】企业计量金融工具预期信用损失的方法应当反映的要素包括( )。
A.
通过评价一系列可能的结果而确定的无偏概率加权平均金额
D.
在资产负债表日无须付出不必要的额外成本或努力即可获得的有关过去事项、当前状况以及未来经济状况预测的合理且有依据的信息
【单选题】听力原文:O.K. Here's your key. The elevator is down the hall to your right. Breakfast will be served from seven to eleven a.m. in the restaurant, which is down the stairs. The fitness room is from eight a...
【单选题】听力原文:Which key opens that door? (A) That is to Mr. John's office. (B) This one right here, (C) Jim's door is always open. (24)
【单选题】下列日常经营活动涉及的税金中,计入营业税金及附加科目的是( )。
【单选题】听力原文:Had I known you didn't have a key, I wouldn't have locked the door. Which is true about the speaker's implication?
A.
I knew you have a key.
B.
I'm sorry I locked the door.
C.
I'm sorry I didn't lock the door.
D.
I didn't know you have a key.
【简答题】能保证直线 a 与平面 α 平行的条件是 ( ) A . b ⊂ α , a ∥ b B . b ⊂ α , c ∥ α , a ∥ b , a ∥ c C . b ⊂ α , A 、 B ∈ a , C 、 D ∈ b ,且 AC ∥ BD D . a ⊄ α , b ⊂ α , a ∥ b