( )要贯穿于公司经营活动的始终，建立健全公司授权标准和程序，确保授权制度的贯彻执行。
A．明确责任
B．权利制衡
C．风险控制
D．严格授权
参考答案：D
根据句意，用括号中所给单词的适当形式完成句子。
1. Her parents are out. She's _______ (babysit) her sister.
2. Tom _______ (can) come to my party because he is ill.
3. Thank you for your _______ (invite) to your party.
4. Please keep quiet!My sister's trying _______ (study).
5. He would love _______ (have) a cup of tea.
深低温低流量体外循环时鼻咽温度应低于（）
A.10℃
B.15℃
C.20℃
D.25℃
E.30℃
