实际直流发电机采用多个电枢线圈的作用是：（） A.减小碳刷与换向器摩擦产生的火花 B

我国商业银行监管当局提出的商业银行公司治理要求的主要内容包括( )。

A．完善股东大会、董事会、监事会、高级管理层的议事制度和决策程序

B．明确股东、董事、监事和高级管理人员的权利、义务

C．建立、健全以监事会为核心的监督机制

D．建立完善的信息报告和信息披露制度

E．建立合理的薪酬制度，强化激励约束机制

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.

When is a new set of global farm talks planned to start（）

A．1980

B．1990

C．2001

D．at the end of 20 ^th century

患者女，19岁。上前牙松动3年，检查见上切牙松动Ⅱ度，扇形移位，口腔卫生较好，初步印象为局限性青少年牙周炎。

青少年牙周炎牙槽骨吸收的特点如下，除外（）

A.初期牙槽骨仅表现为疏松

B.可见到牙槽硬骨板模糊不清，但牙槽骨无明显吸收

C.病变中、晚期，骨吸收多呈杯状或角形吸收

D.多发生牙槽骨的水平吸收

E.牙槽骨吸收的范围和牙周袋深度常不一致

“烟草专用机械”是指由（）烟草专用机械名录所公布的，在卷烟、雪茄烟、烟丝、复烤烟叶、烟叶、卷烟纸、滤嘴棒、烟用丝束的生产加工过程中，能够完成一项或者多项特定加工工序，可以独立操作的机械设备。

A.县级烟草专卖行政主管部门

B.市级烟草专卖行政主管部门

C.省级烟草专卖行政主管部门

D.国务院烟草专卖行政主管部门

关于恶性肉芽肿的叙述，正确的是（）

A.又称坏死性肉芽肿

B.治疗困难，预后不良

C.多与EB病毒感染有关

D.其实质是淋巴瘤

E.其实质是肿瘤