在赤道上空，水平放置一根通以由西向东的电流的直导线，则此导线（ ） A．受到由西

小明今年a岁，明年______岁．

At first I was not quite willing to sit down and watched the 90-minute football match. Usually I just checked the results because I thought that was dull to watch a game in which players kicked a ball each other. Therefore, my father loves football. During the World Cup in 2002, my dad stays up late just to watch his favorite sport. Seeing his strong interest in this game of 22 men run after a ball, I decided to sit down to watch the game. I found the game excited, and my dad explained for the rules. We shared our joy. Football is not too badly as long as I watch it with my dad!

脉络膜转移癌的特点包括（）

A.患者多无明显眼部症状或无痛性视力下降

B.眼底多见多发黄色病灶

C.可伴有浆液性视网膜脱离

D.应主要治疗原发肿瘤，眼部可行放疗或化疗

E.以上均是

自由时差指的是在不影响紧后工作（）的前提下，本工作可利用的机动时间。

A．最早开始时间

B．最迟开始时间

C．最早完成时间

D．最迟完成时间

( )是委托人依据设备工程监理服务合同支付给监理人的全部款项，包括监理报酬与监理费用。

A．服务费

B．监理费

C．设备费

D．委托费