【简答题】脱式计算（能简算的要简算） （8）83小5+450÷88×w5 （w） w 5 + 3 5 × 4 2 ÷ 4 5 （3）2.08×808 （4）8.w8×4w-（4.4m+0.84） （5） 4 小 × 8 5 + 4 小 ÷5 （m） 8 3 ×( 8 w -50× 8 800 ) ．

【简答题】假设劳动的需求由L＝-50W+450给出，劳动的供给由L＝100W给出。其中L代表雇佣的人数，W代表每小时实际工资率，求：

【单选题】在各种促销手段中,最有利于建立和培养友好关系,而且及时获得买主反应的是( )。

【判断题】右手法则又称为电动机定则，左手定则又称为发电机定则。

【单选题】室内LED发光器件ρ15mm显示屏256色最大功耗为( )。

【单选题】单坡跨度大于( )的平屋面宜做结构找坡且( )。

【单选题】In his last message, the monster told Frankenstein that he was going____.

【单选题】根据当地的气候土壤条件，确定绿化树种后，选择适合的绿地进行栽植，此途径为（   ）。

【简答题】One morning, Jim Reed checked his e-mail. He found a strange message on the e-mail. It was from a woman in Pittsburgh, Pennsylvania. He had talked to her on e-mail many times in the last ten days. All...

【简答题】One morning, JimReed checked his e-mail. He found a strange message on the e-mail. It was froma woman in Pittsburgh, Pennsylvania. He had talked to her on e-mail many timesin the last ten days. All th...