营业人员上岗时穿统一标志服，做到（），并根据季节不同统一时间换装。A.洁净 B.整齐

下列说法中，不符合ⅦA族元素性质特征的是

A．从上到下原子半径逐渐减小

B．易形成-1价离子

C．最高价氧化物的水化物显酸性

D．从上到下氢化物的稳定性依次减弱

某上市公司的董事会要进行涉及一项关联交易的表决，该公司董事会共有16人组成，其中有高某等6人与所涉的交易有关联关系，另有3个董事因故没有参加该次董事会。则()。

A．高某没有表决权，但是可以通过授权代理没有出席的董事行使表决权

B．高某等6人不能参加董事会

C．该事项只要经过除高某等6人以外的其他董事过半数即可通过

D．应将该事项提交股东大会审议

男性，39岁。临床诊断复合性溃疡，行毕Ⅱ式胃大部切除术（空肠近端对大弯、远端对小弯）后3个月，每进食5～30分钟即出现上腹饱胀不适，恶心、呕吐，腹泻、偶有腹绞痛，同时伴心慌、出汗、眩晕、面色苍白、乏力等症状。引起上述症状最可能的原因是（）。

A.吻合口梗阻

B.输出袢梗阻

C.输入袢梗阻

D.倾倒综合征

E.低血糖综合征

Living in a foreign culture can be exciting, but it can also be confusing. A group of Americans who taught English in other countries recently discussed their experiences. They decided that miscommunications were always possible, even over something as simple as "yes" and "no".

On her first day in Micronesia, an island in the Pacific, Lisa thought people weren’t paying any attention to her. The day was hot. She went into a store and asked, "Do you have cold drinks" The woman there didn’t say anything. Lisa repeated the question. Still the woman said nothing. She later learned that the woman had answered her: She had raised her eyebrows, which in Micronesia means "yes".

Jan remembered an experience she had in Bulgaria, a country in Europe. She went to a restaurant that was known for its cabbage. She asked the waiter, "Do you have cabbage today" He nodded his head. Jan waited, but the cabbage never came. In that country, a nod means no.

Tom had a similar problem when he arrived in India. After explaining something in class, he asked his students if they understood. They answered with many different nods and shakes of the head. He thought some people had not understood, so he explained again. When he asked again, they did the same thing. He soon found out that his students did understand. In India, people nod and shake their heads in different ways depending on where they come from. You have to know where a person is from to understand whether they mean "yes" or "no".

People in Micronesia show "yes" by （）

A．nodding heads

B．raising eyebrows

C．shaking heads

D．saying "no"

施工现场的安全防护用具、机械设备、施工机具及配件必须由（）管理，定期进行检查、维修和保养，建立相应的资料档案，并按照国家有关规定及时报废。

A.项目部

B.作业班组

C.操作人员

D.专人