架空光缆挂牌上应有中国移动标志，主要填写施工日期、（）、光缆型号、芯数、联系电话等。

将经过淬火的钢件重新加热到临界点以下某一温度，并保持一定时间，然后冷却到室温的热处理工艺称为回火。

右图是酷似奥林匹克旗中五环的一种有机物，被称之为奥林匹克烃，下列说法正确的是（ ）

A．该有机物属于苯的同系物

B．该有机物的一氯代物有一种

C．该有机物属于苯的衍生物

D．该有机物完全燃烧生成H₂O 的物质的量小于CO₂的物质的量

Questions from 31 to 35 are based on the following passage: Against this background, the WTO faces several daunting challenges. The first is to continue bringing down tariffs on traded goods. Average penalties have fallen steadily since the GATT’s formation but even the most open economies retain lofty barriers: for instance, America still charges a tariff of 14.6% on import of clothing, five times higher than its average levy.Resistance to tariff cuts is pest in agriculture. According to Tim Josling, a trade expert at Stanford University, tariffs and other barriers on farm goods average a crippling 40% worldwide and create distortions that “destroy huge amounts of value”. A new set of global farm talks is planned to start in 1999. At the least, you might think, these could lock in impressive reforms in Latin America and encourage further watering-down of the European Union’s Common Agricultural Policy. But they will prove difficult: squabbles over agriculture almost sank the Uruguay round.

The best title for the passage is（）.

A．NEW TRADE RULES

B．UNFAIR TRADE RULES

C．TRADE BARRIERS FOR DEVELOPING COUNTRIES

D．TARIFF CHALLENGES TO WTO

根据《期货从业人员管理办法》，负责认定、管理及撤销期货从业人员从业资格的是( )。

A．中国证监会
B．中国证券业协会
C．中国期货业协会
D．各期货公司

大头瘟多发生于（）

A.冬季

B.夏秋季

C.春季

D.冬春季

E.夏秋季