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【单选题】
Positive surprises from government reports on retail sales, industrial production, and housing in the past few months are leading economists to revise their real gross domestic product forecasts upward, supporting the notion that the recession ended in December or January. Bear in mind: This recovery won't have the vitality normally associated with an upturn. Economists now expect real GDP growth of about 1.5% in the first quarter. That's better than the 0.4% the consensus projected in December, but much of the additional growth will come from a slower pace of inventory drawdowns, not from surging demand. Moreover, the economy won't grow fast enough to help the labor markets much. The only good news there is that jobless claims have fallen back from their spike after September 11 and that their current level suggests the pace of layoffs is easing. The recovery also does not mean the Federal Reserve will raise interest rates soon. The January price indexes show that inflation remains tame. Consequently, the Fed can take its time shifting monetary policy from extreme accommodation to relative neutrality. Perhaps the best news from the latest economic reports was the January data on industrial production. Total output fell only 0.1%, its best showing since July. Factory output was flat, also the best performance in six months. Those numbers may not sound encouraging, but manufacturers have been in recession since late 2000. The data suggest that the factory sector is finding a bottom from which to start its recovery. Production of consumer goods, for instance, is almost back up to where it was a year ago. That's because consumer demand for motor vehicles and other goods and the housing industry remained healthy during the recession, and they are still growing in early 2002. Besides, both the monthly homebuilding starts number and the housing market index for the past two months are running above their averages for all of 2001, suggesting that homebuilding is off to a good start and probably won't be a big drag on GDP growth this year. Equally important to the outlook is how the solid housing market will help demand for home-related goods and services. Traditionally, consumers buy the bulk of their furniture, electronics and textiles within a year of purchasing their homes. Thus, spending on such items will do well this year, even as car sales slip now that incentives are less attractive. Look for the output of consumer goods to top year-ago levels in coming months. Even the business equipment sector seems to have bottomed out. Its output rose 0.4% in January, led by a 0.6% jump computer gear. A pickup in orders for capital goods in the fourth quarter suggests that production will keep increasing—although at a relaxed pace—in coming months. American economists are surprised to see that
A.
their government is announcing the end of a recession.
B.
US economy is showing some signs of an upturn so soon.
C.
some economic sectors have become leading industries.
D.
they have to revise the product forecasts so often.
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【单选题】Theuse of chloramphenicol may result in
A.
Bone marrow stimulation
B.
Phototoxicity
C.
Aplasticanemia
D.
Staining of teeth
【单选题】习近平新时代中国特色社会主义思想,明确坚持和发展中国特色社会主义,总任务是实现社会主义现代化和( )
A.
共同富裕
B.
发展生产力
C.
中华民族伟大复兴
D.
加强党的领导
【多选题】设随机变量X服从正态分布N(1,22),则有( )。
A.
P(X>1)=P(X<1)
B.
P(X>2)=P(X<2)
C.
P(X<1)=P(X<1)+P(X>-1)
D.
P(X>1)=P(X>1)4-P(XE(0
【判断题】Theuse of price as a competitive weapon to drive weaker competitors out of anational market is known as predatory pricing.
A.
正确
B.
错误
【多选题】设随机变量X服从正态分布N(1,22),则有( )。
A.
P(X>1)=P(X<1)
B.
P(X>2)-P(X<2)
C.
P
D.
X
E.
<1)=P(X<1)+P(X>-1)
F.
P
G.
X
H.
>1)=P(X>1)4-P(XP(0
【单选题】以下不属于机械能的是
A.
重力势能
B.
动能
C.
弹性势能
D.
电能
【简答题】水库溢洪道宽度越大,最大下泄流量越( ),防洪库容越( )。
【简答题】水库溢洪道宽度越大,最大下泄流量( ),防洪库容( )。
【单选题】You have a use case in your web application that adds several session-scoped attributes. At the end of theuse case, one of these objects, the manager attribute, is removed and then it needs to decide ...
A.
The object of the manager attribute should implement the HttpSessionBindingListener and it should call the removeAttribute method on the appropriate session attributes.
B.
The object of the manager attribute should implement the HttpSessionListener and it should call the removeAttribute method on the appropriate session attributes.
C.
The object of the manager attribute should implement the HttpSessionBindingListener and it should call the deleteAttribute method on the appropriate session attributes.
D.
The object of the manager attribute should implement the HttpSessionListener and it should call the deleteAttribute method on the appropriate session attributes.
【简答题】对于一个m行n列的稀疏矩阵中有len个非零元素,则用十字链表存储时,需要( )个头指针。
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