备用信用证主要分为两类（）。

A.可撤销的备用信用证和不可撤销的备用信用证

B.远期备用信用证和即期备用信用证

C.跟单备用信用证和不附单据备用信用证

D.以上皆错

Nursing care for a client after electroeonvulsive therapy (ECT) should include which of the following

A．Nothing by mouth for 24 hours after the treatment because of the anesthetic agent.

B．Bed rest for the first 8 hours after a treatment.

C．Assessment of short-term memory loss.

D．No special care.