A:
B:
C:
D:
举一反三
- 按热力学分类，由α相β相为一级相变，则其相变特征是() A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c0fba5fc3fd9486e9595e057099b4fb7.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/31b0e59ca4514a2d920ffb2605ee1864.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/8669999525164f51bac9ed30f5067429.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/f39ef47427164774b6f4153c6c300e10.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/15cc1ade6dae4c6ead266095b40e6809.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/7347833ef3c5413f9e506e0f48ca519e.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/f39ef47427164774b6f4153c6c300e10.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/31b0e59ca4514a2d920ffb2605ee1864.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/8669999525164f51bac9ed30f5067429.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c0fba5fc3fd9486e9595e057099b4fb7.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/31b0e59ca4514a2d920ffb2605ee1864.png" >，<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c4736875605d471fb62de7fdb639f4ae.png" >
- 正确的全剖视的左视图是（）。<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c8108aaf6b9e4d8d8288dccc92caa773.png" > A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/b383bc6b97ed4c4aa6faf378b5c0dd8e.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/a7aeefd059e04d909f49b1f32b8eb644.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/675821eb2ae8403ca7537392dcc633af.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/dde1d5412a7c4d98b687d2c3b76b3c27.png" >
- 下面三视图正确的有（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/b223b1ae5d9d40929158d9bbcd70688b.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/3ca48c5305c34feb9f8fa92c4b8011f8.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c0455dd5f9364e7fb9ddab1d8e5cbf3e.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/4d716651ccfe47829019aadb944670bf.png" >
- 理想气体向真空膨胀过程中（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/b5a408ce6e3748d0bc85a3438d41d4b3.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/a6829bafb8b8404c9c25db85d8c45a32.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/0a15434bd2624753baf1ddad159dd8da.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/17d3e65c317a4e3095c60b2292ff0d97.png" >
- 下列偏好是相似偏好的有（） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/03e75da569094609a208f92966746245.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/d90530a177674c5ca7b2ae0c1a430bef.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/db0bd821537f4fd0ae5822c3dcac660f.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/6a29b9b5dd584ea6b1c19e0a00ab156d.png" >
内容
- 0
以下是一些系统函数的收敛域，则其中稳定的是()。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/c05f69717a214356a5f18a4b6899ca6a.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/fc079e2aad0a4f6285b861d7ed3b5cee.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/4144dae3ee5e497bbe5567f664e1045a.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/ac101952a39c456da9f0443233498d24.png" >
- 1
总蒽醌的乙醚溶液中，采用5%NaHCO3溶液萃取，碱水层的成分是：（） A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/e780e08ee0d5455e8886c395f89f45da.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/49b958abd18b4dbcbcbe8f03ec657948.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/5737c8a8d44b49bcb90bfe2c4407caeb.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/a55c5696f23c45e68067ddf9e9506ec1.png" >
- 2
插销穿过水平放置的平板上的圆孔，在其下端受一拉力F作用。该插销的剪切面面积和挤压面面积分别等于（）。<img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/5d23680126824bfab3f4f4993ca84f92.png"> A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/0fb38a6e2ec5434f85408b2720422fc1.png"> B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/f4d0398cfbe84d15bb6369dc4c837211.png"> C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/5075a462f16045358ac45a636012cc27.png"> D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/6754d0277d3f4f07aee0ce613bfca1d4.png">
- 3
在一绝热箱内，一电阻丝浸入水中，通以电流。若以水和电阻丝为系统，其余为环境，则（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/a9f04b31565743a8b96f21c4ad1d5486.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/8897c7e012d44584b8ed795db89f0c8f.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/cad4626c78cd47d781566e33198e1c5a.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/44811b349b8f47b8a330c85bb73d83a2.png" >
- 4
下列由A,B二组分形成的凝聚相体系相图中（P一定），既形成稳定化合物，又形成不稳定化合物的体系是（）。 A: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/9b92e3ffc85446619b36bff28d864ded.png" > B: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/feba93efc1b34dc4b80f5fd210cd721c.png" > C: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/6c03ccc8c59c446f8a388d665d41c64f.png" > D: <img src="https://image.zhihuishu.com/zhs/doctrans/docx2html/202005/04a56202de1743fab9a01ae0592c1241.png" >