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问题 选择题

I don't have _____ apples, but I have _____ oranges.[ ]

A. some; some

B. any; any

C. any; some

D. some; any

答案

答案：C

单项选择题

A client diagnosed as having panic disorder with agoraphobia is admitted to the inpatient psychiatric unit. Until her admission, she had been a virtual prisoner in her home for 5 weeks, afraid to go outside even to buy food. Which of the following should be the nurse’s overall goal of care

A. To help the client perform self-care activities.
B. To help the client function effectively in her environment.
C. To help control the client’s symptoms.
D. To help the client participate in group therapy.
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问答题


事务T1，T2，T3分别对数据D1，D2，D3并发操作如下图所示，其中T1与T2间的并发操作存在的问题是 (1) 。T2与T3间的并发操作存在的问题是 (2) 。

时间T1T2T3

t1

t2

t3

t4

t5

t6

t7

t8

t9

t10

t11

t12

t13

t14

t15

读D1=50

读D2=100

读D3=300

x1=D1+D2+D3

读D1=50

读D2=200

读D3=300

x1=D1+D2+D3

验证不对

读D2=100

读D3=300

D2=D3-D2

写D2

读D2=100

D2=D2+50

写D2
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