泥石流是山区沟谷中，由暴雨、冰雪融化等水源激发的，含有大量（）的特殊洪流。A、泥沙洪

红细胞悬浮稳定性差会导致 ( )

A．溶血

B．凝集

C．凝固

D．血沉加快

E．出血时延长

异常的天气状况危及到一个关键可交付成功的时间线。在这个时候，下列哪一份项目文件对项目经理有帮助？（）

A.风险登记册

B.工作分解结构

C.项目进度表

D.风险分解结构

Which one of the following most accurately describes the normal sequence of a business cycle（）

A. Expansion, contraction, recessionary trough, and peak.

B. Peak, contraction, expansion, and recessionary trough.

C. Contraction, recessionary trough, expansion, and peak.

电子商业汇票涉及资金清算的业务品种包括（）。

A.票据贴现

B.票据转贴现及赎回

C.票据再贴现及赎回

D.票据到期付款

There is a man at the reception desk who seems very angry and I think he means making trouble.

A．to make

B．to have made

C．to having made

D．having made