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【简答题】
人体获得维生素D的两条途径是 、皮肤内 形成。
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】When ______ why he walked in without permission, he just stared at us and said nothing.
A.
asking
B.
asked
C.
being asked
D.
to be asked
【单选题】When stared at the alleged liar with a look of disbelief, what will not an honest person perform?
A.
lips pressed together,
B.
brows up
C.
upper eyelid tensed
D.
upper eyelid pulled down to glare
【单选题】When ______ why he came in without permission, he stared at us, saying nothing.
A.
asking
B.
asked
C.
being asked
D.
to be asked
【单选题】The woman in the shop stared at them strangely, because ______.
A.
she saw foreigners for the first time
B.
they had on funny clothes
C.
she wondered why they came into the shop
D.
they didn't give her any money
【简答题】一般的说,主减速比大时,加速时间较短,燃油经济性 。
【单选题】女34岁,第一胎孕38周,医生测量骨盆,正常骨盆的形态是
A.
骨盆的3个假想平面均呈纵椭圆形
B.
骨盆的入口和中骨盆平面为纵椭圆形
C.
骨盆的入口平面呈横椭圆形
D.
骨盆的3个假想平面均呈横椭圆形
E.
骨盆的入口及出口平面呈纵椭圆形
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