乘务工作中遇到旅客患病时，应立即通过广播（无广播时由列车长）向旅客中医务工作者救助。列车红十字救护员要立即携带药箱并佩带胸卡到达现场。
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凡是用保证金交易的行为都属于投机行为。
A. 对
B. 错
协方差的绝对值越小，则这两种资产报酬率的关系越密切。（）
A. 对
B. 错
Which two statements are true regarding EIGRP?（）
A. Passiveroutes are in the process of being calculated by DUAL.
B. EIGRP supports VLSM, route summarization, and routing update authentication.
C. EIGRP exchanges full routing table information with neighboring routers with every update.
D. If the feasible successor has a higher advertised distance than the successor route, it becomes the primary route.
E. A query process is used to discover a replacement for a failed route if a feasible successor is not identified from the current routing information.
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