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【判断题】
导线水平角的观测方法一般采用测和方向观测法。
A.
正确
B.
错误
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参考答案:
举一反三
【单选题】下面这两个化合物 的关系为
A.
同一化合物
B.
对映体
C.
非对映体
D.
顺反异构体
【简答题】食品添加剂是指改变食品品质和()及防腐和加工工艺的需要而加入食品中的物质
【单选题】原来的沉积区上升为陆上剥蚀区,于是沉积作用转化为侵蚀作用,原有沉积物反而被剥蚀,直到该区再次下降为沉积区,接受新的沉积。如此,两套沉积物(成岩后的地层)之间隔着一个大陆侵蚀面,但两者的产状平行一致,这种关系称为(     )。
A.
平行不整合接触
B.
角度不整合接触
【多选题】断路器操动机构的作用是进行断路器的( )操作。
A.
合闸
B.
保护
C.
维持合闸
D.
分闸
【单选题】听力原文:M: How do you like the new physician who replaced Dr. Andrews? W: He may not seem as agreeable or as thorough as Dr. Andrews, but at least he doesn't keep patients waiting for hours. Q: What can ...
A.
Dr. Andrews has been promoted for his thoroughness.
B.
She disagrees with Dr. Andrews on many occasions.
C.
Dr. Andrews used to keep his patients waiting.
D.
She dislikes Dr. Andrews as much as the new physician.
【多选题】常见的生物碱沉淀试剂有 ( )。
A.
碘化铋钾
B.
雷氏铵盐
C.
硅钨酸
D.
苦味酸
E.
茚三酮试剂
【单选题】食品添加剂是指为( )和色、香、味,以及为防腐、保鲜和加工工艺的需要而加入食品中的化学合成或者天然物质。食品用香料、胶基糖果中基础剂物质、食品工业用加工助剂也包括在内。
A.
改善食品品质
B.
掩盖腐败变质
C.
掺杂掺假
D.
掩盖食品污染
【简答题】液压操动机构利用液体的(),以液压油为传递介质,将高压油送入工作缸两侧来实现断路器分合闸,是以()驱动工作缸活塞带动触头进行分合操作。
【单选题】听力原文:M: How do you like the new physician who replaced Dr. Andrews? W: He may not seem as agreeable or as thorough as Dr. Andrews, but at least he doesn't keep patients waiting for hours. Q: What can ...
A.
She dislikes Dr. Andrews as much as the new physician.
B.
Dr. Andrews has been promoted for his thoroughness.
C.
She disagrees with Dr. Andrews on many occasions.
D.
Dr. Andrews used to keep his patients waiting.
【单选题】How many hours do Dr. Jerald Block's patients spend on the Internet every week?
A.
More than 20-30 hours a week
B.
More than 30-40 hours a week
C.
More than 40-50 hours a week
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