The head nurse is observing a new graduate nurse instill eye drops into a client's eyes. The head nurse evaluates that the new graduate is using appropriate technique when which of the following steps is incorporated into the procedure

A．The client is instructed to apply pressure to the eyes after instillation of the eye drops.

B．The nurse's hand is stabilized on the client's forehead while instilling the drops.

C．The medication is placed onto the client's sclera.

D．The client is instructed to look at the nurse while the drops are being instilled.

无规则型构型系统可靠性高，但是结构复杂。为了实现正确的传输必须采用( )。
Ⅰ．异步传输技术
Ⅱ．路由选择算法
Ⅲ．流量控制技术
Ⅳ．加密解密技术

A．Ⅰ和Ⅱ

B．Ⅰ和Ⅲ

C．Ⅱ和Ⅲ

D．Ⅱ和Ⅳ