非感染症病人用过的器材最好使用完毕按以下方法进行分类A．尽量不要直接用手进行分类 B

若下列气体集中在巷道的话，应在巷道底板附近检测的气体是（）

A、甲烷与二氧化碳

B、二氧化碳与二氧化硫

C、二氧化硫与氢气

D、甲烷与氢气

下述脾虚夹痰经行眩晕的主证中，哪项是错误的：

A．经期头晕沉重

B．胸闷泛恶

C．少食多寐

D．口干咽燥

E．苔白腻，脉濡滑

Part 2

·Your manager is keen to introduce new practices into your company. He has asked you to write a report which includes details of two practices .from another company which you would suggest adopting in your own company.
☆ Write the report for your manager, including the following information.
☆ What you admire about the other company.
☆ Which two of its practices you would adopt.
☆ Why your company would benefit from them.
·Write in your own words; do not copy what you read here.

The contract is very important for both of you, so studying it ________before signing is necessary.

A．in return

B．in exchange

C．in detail

D．in turn

非零多项式g（x），f（x）一定存在最大公因式，且是唯一的，只有一个。