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【多选题】
周期表中16号元素和4号元素的原子相比较，前者的下列数据是后者的4倍的是 [ ]A.
电子数
B.
最外层电子数
C.
电子层数
D.
次外层电子数
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反馈参考答案：
举一反三
【简答题】根据肌组织的形态和功能特点可把肌组织分为（）三种，横纹肌是指骨骼肌和心肌，随意肌是指骨骼肌。
【简答题】According to the passage the problems of college education partly arise from the fact that ________. A) society cannot provide enough jobs for properly trained college graduates B) high school graduat...
【单选题】What has NOT been mentioned as a bad effect on tourists?
A.
Tourists may also be attacked by sharks.
B.
Historically a shark has attacked on a tourist.
C.
The humpback whales of Tonga are most dangerous.
D.
The huge waves caused by big whales can also be threatening to human swimmers.
【单选题】关于直疝三角，下列哪项是错误的
A.
直疝三角在腹股沟管下端内侧后方
B.
腹股沟韧带是其底边
C.
腹直肌外缘是其内侧边
D.
腹壁下动脉是其外侧边
E.
腹横筋膜发育正常
【多选题】What are the 2 different types of tourists in South Africa?
A.
Old tourists
B.
NSSA tourists
C.
Young tourist
D.
Wander luster tourists
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