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问题 单项选择题

本例首先考虑的诊断是

A．胎盘早期剥离
B．先兆早产
C．前置胎盘
D．血小板减少性紫癜
E．凝血功能障碍

答案

参考答案：C

解析：[解题思路] 易。前置胎盘的临床表现为妊娠晚期或临产时发生无诱因、无痛性反复 * * 流血。

单项选择题

With hundreds of millions of electronic (161) taking place daily, businesses and organizations have a p incentive to protect the (162) of the data exchanged in this manner, and to positively ensure the (163) of those involved in the transactions. This has led to an industry-wide quest for better, more secure methods for controlling IT operations, and for deploying p security mechanisms deeply and broadly throughout networked infrastructures and client devices. One of the more successful concepts to engage the imaginations of the security community has been the development of standards-based security (164 ) that can be incorporated in the hardware design of client computers. The principle of encapsulating core security capabilities in (165 ) and integrating security provisions at the deepest levels of the machine operation has significant benefits for both users and those responsible for securing IT operations.

A．software

B．form

C．computer

D．silicon
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问答题 简答题

简述代位求偿的条件有哪些？
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