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【单选题】
虚拟存储器是把哪两者有机地结合起来使用的( )。A.
内存与寄存器
B.
内存与高速缓存
C.
外存与高速缓存
D.
内存与外存
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【简答题】When people become unemployed, it is _____ ?When people become unemployed, it is _____ which is often worse than lack of wages. A) laziness B) poverty C) idleness D) inabil...
【简答题】发生什么事情了,我可以帮你什么
【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.
颈后皮肤透明层（NT）增厚的胎儿可能是正常胎儿，NT值正常的胎儿亦可能是异常胎儿
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
【简答题】When a population is said to be aging,______. [A] more people are retiring than people entering the workforce [B] the birth rate is growing [C] there is an oversupply of workforce [D] young people out...
【简答题】According to the article, when people feel too worried or nervous or when they overwork,
【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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