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【单选题】
抛物线y=x 2 的准线方程是 ( )
A.
4y+1=0
B.
4x+1=0
C.
2y+1=0
D.
2x+1=0
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【单选题】意大利罗马大学的Fulvio Cacace等人获得了极具理论研究意义的N 4 分子。N 4 分子结构如图所示,下列说法正确的是( )
A.
N 4 属于一种新型的化合物
B.
N 4 转化为N 2 属于物理变化
C.
N 4 的摩尔质量为56
D.
N 4 与N 2 互为同素异形体
【多选题】In business operations, the ( ) of facilities used to perform. logistical operations directly impacts customer service capabilities and cost.
A.
number
B.
size
C.
geographical relationship
D.
price
【多选题】下列不是护理学的发展所经历的阶段是( )
A.
以清洁卫生为中心
B.
以疾病护理为中心
C.
以病人护理为中心
D.
以人的健康为中心
E.
以人的需要为中心
【单选题】At a particular time of computation the value of a counting semaphore is 7.Then 20 P operations and 15 V operations were completed on this semaphore. The resulting value of the semaphore is?
A.
42
B.
2
C.
7
D.
12
【简答题】n. 出租车
【简答题】贴现操作(discount operations)
【简答题】A.That there was no effect. B.That it improved operations. C.That operations became less efficient. D.That the employees became dissatisfied.
【多选题】咀嚼式口器害虫的为害包括( )。
A.
叶片缺刻
B.
叶片孔洞
C.
叶片开天窗
D.
果实、种子产生隧道、孔洞
【简答题】Construal and construal operations
【单选题】Royal Dutch Shell is
A.
discontinuing operations in the North Sea.
B.
scaling sown operations in the North Sea.
C.
planning to relocate some of its workers outside Aberdeen.
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