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问题 填空题
若函数y=f（x）的定义域是[0，2]，则函数g(x)=
f(2x)
x-1
的定义域是______．
答案

∵函数y=f（x）的定义域是[0，2]

要使函数g（x）有意义，需使f（2x）有意义且x-1≠0

所以

x-1≠0
0≤2x≤2

解得0≤x＜1

故答案为[0，1）

单项选择题

同样材料的物体，放置在角度相同的向阳的地方，但表面涂上（）的物体吸收太阳辐射的热量就会多些。

A、白色

B、红色

C、黑色
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单项选择题

When the system upon which a transport entity is running fails and subsequently restarts, the (136) information of all active connections is lost. The affected connections become half-open, as the side that did not fail does not yet realize the problem.
The still active side of a half-open connections can close the connection using a (137) timer. This timer measures the time the transport machine will continue to await an (138) of a transmitted segment after the segment has been retransmitted the maximum number of times. When the timer (139) , the transport entity assumes that either the other transport entity or the intervening network has failed. As a result, the timer closes the connection, and signals an abnormal close to the TS user.
In the event that a transport entity fails and quickly restarts, half-open connections can be terminated more quickly by the use of the RST segment, the failed side returns an RST i to every segment i that it receives, when the RST i reaches the other side, it must be checked for validity based on the (140) number i, as the RST could be in response to an old segment, if the reset is valid, the transport entity performs an abnormal termination.

A．reset

B．acknowledgment

C．sequence

D．synchroizer
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