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【简答题】
在分子、原子、质子、中子、电子、原子核等粒子中： (1)能直接构成物质的粒子是____； (2)能保持物质化学性质的粒子有________； (3)显中性的粒子有_____； (4)带正电的粒子有______； (5)带负电的粒子有______； (6)质量最小的粒子是_______； (7)参加化学反应时，一定发生变化的粒子有______； (8)在同一原子里数目相等的是____； (9)质量与氢原子质量近似相等的是____。
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皮皮学刷刷变学霸
举一反三
【单选题】王奶奶,76 岁。生活自理,腰部酸痛,经检查无需特殊治疗,注意保暖即可,需要用暖宝宝。照护人员李红在指导使用暖宝宝时,错误的是( ) 单选
A.
贴于内衣的外侧
B.
晚上睡觉时不宜使用,防止低温烫伤
C.
避免真空塑料包装袋损伤或破坏,否则产品会失效
D.
若不慎接触到眼睛要立即用清水冲洗并及时报告,误食后要立即催吐并及时就医
E.
必要时要直接贴于老年人皮肤上
【单选题】She had short,__________, and she swept a lock from out of her eyes before she answered.(a fairly short hair style for women in which the hair is the same length all the way round, except for the fron...
A.
l ayered hair
B.
bobbed hair
C.
cropped hair
D.
pony tail
【单选题】She had short, __________, and she swept a lock from out of her eyes before she answered.(a fairly short hair style for women in which the hair is the same length all the way round, except for the fro...
A.
wavy hair
B.
ponytail
C.
bobbed hair
D.
cropped hair
【单选题】She had short,__________, and she swept a lock from out of her eyes before she answered.【图片】(a fairly short hair style for women in which the hair is the same length all the way round, except for the ...
A.
layered hair
B.
bobbed hair
C.
cropped hair
D.
ponytail
【单选题】She had short, __________ , and she swept a lock from out of her eyes before she answered. (a fairly short hair style for women in which the hair is the same length all the way round, except for the f...
A.
cropped hair
B.
pony tail
C.
l ayered hair
D.
bobbed hair
【简答题】企业策划的步骤
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