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问题 单项选择题

卵巢囊肿蒂扭转的蒂的组成成分是()

A．骨盆漏斗韧带、卵巢固有韧带

B．骨盆漏斗韧带、卵巢固有韧带和输卵管

C．卵巢固有韧带和输卵管

D．卵巢固有韧带

E．卵巢悬韧带

答案

参考答案：B

单项选择题

A crew member reports that the high-pressure alarm light of a low-pressure CO2 fixed fire extinguishing system is illuminated. The most probable cause of this condition would be that（）.

A.an air leak has developed in the tank

B.the tank cooling system has malfunctioned

C.the pilot cylinder discharge valve is leaking

D.an excessive amount of insulation has been installed on the tank and piping
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单项选择题

局域网中应用最广泛的差错控制方法是 (47) 校验。在CRC校验中，假设采用的生成多项式为四阶多项式，它产生的校验码为 (48) 位。在接收端，若发现错误，则将采取 (49) 措施。

A．重新生成数据

B．自动纠错

C．自动请求重发

D．自动恢复数据
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