下面哪些药物是对晶状体有毒性作用的（） A.糖皮质激素 B.匹罗卡品 C.阿托品 D

When the system upon which a transport entity is running fails and subsequently restarts, the (1) 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 connection can close the connection using a (2) timer. This timer measures the time the transport machine will continue to await an (3) of a transmitted segment after the segment has been retransmitted the maximum number of times. When the timer (4) , 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 (5) 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.

2（）

A.give-up 

B.abandon 

C.quit 

D.connection

（）全面反映了企业的股东权益在年度内的变化情况。

A.资产负债表

B.利润表

C.现金流量表

D.所有者权益变动表

把3.5146四舍五入保留3个有效数字，结果是 [ ]

A.3.51

B.3.515

C.3.52

D.3.514

需初步评判体内蛋白质合成与分解代谢状况时，可做下列哪项试验

A．糖耐量试验

B．氮平衡试验

C．酚红排泄试验

D．脂肪廓清试验

E．维生素含量试验

（EMB145）以下舵面哪个没有使用到液压系统作为动力？（）

A.升降舵

B.方向舵

C.副翼