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【判断题】
(中级)转向器啮合间隙过大是引起低速打摆现象的原因之一。A.
正确
B.
错误
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【单选题】When does he try to smile at people and thank them?
A.
when people behave politely
B.
when people behave friendly
C.
when people behave kindly
D.
when people behave nicely
【单选题】下列描述中正确的是（）
A.
脊柱横切面上脊椎呈三个分离的圆形或短棒状强回声，两个椎体后骨化中心较小且向后逐渐靠拢，呈“∧”字形排列，前方中央较大者为椎弓骨化中心
B.
脊柱冠状切面上可见整齐排列的两条或三条平行强回声带，中间一条反射回声来自椎弓，两侧的来自椎体骨化中心
C.
晚孕期胎儿肢体发育比较成熟，此时期是检查胎儿四肢畸形的最佳时期
D.
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E.
中晚孕期是判断双胎妊娠的绒毛膜囊及羊膜囊数目的最佳时间
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【单选题】The author implies that many people attribute Emily Dickinson's seclusion to ______.
A.
physical illness
B.
a failed love affair
C.
religious fervor
D.
her dislike of people
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