As Philadelphia grew from a small town into a city in the first half of the eighteenth century, it became an increasingly important marketing center for a vast agricultural hinterland. Market days (1) the crowded city even more crowded, as farmers from within a (2) of 24 or more kilometers brought their sheep, vegetables, cider and other products for direct sale to the (3) . The High Street Market was continuously (4) throughout the period until 1736, (5) it (6) from Front Street to Third. By 1745 New Market was opened on Second Street. The next year the Callow Hill Market began (7) .
Along with market days, the (8) of twice-yearly fairs persisted in Philadelphia (9) after similar trading days had been discontinued in other colonial cities. The (10) provided a means of bringing handmade goods from (11) places to would-be buyers in the city. Linens and stockings from Germantown, (12) ,
A. Now that
B. Since
C. Although
D. If
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锻造吊钩一般用于起重量在( )以下的起重机上。 A.50吨 B.80吨 C.100吨 [T/] [单选题]()是心智技能的实践模式,即把主体在头脑中应建立起来的活动程序计划。以外显的操作方式付诸执行
A.功能固着 B.原型操作 C.原型执行 D.原型定向 [单项选择]苯丙酮尿症的主要治疗方法为()
A. 大量维生素 B. 限制苯丙氨酸摄入 C. 低蛋白饮食 D. 补充5-羟色氨酸 E. 高糖饮食 [单选题]( )不属于CTCS-2级列控系统车载设备显示的制动状态。
A.暂时制动 B.常用制动 C.紧急制动 D.缓解 [单项选择]单管穿过基础时预留同尺寸, 管径小于50mm时预留同尺寸应为( )。
A. 50×50 B. 100×100 C. 200×200 D. 300×300 [判断题]提升机有两个待机位限位,只要其中一个好用就行。
A.正确 B.错误 [判断题]进行高处作业时,每半个小时应该进行强制休息。
A.正确 B.错误 [判断题]长度在500m以上的隧道应设固定式照明设备。
[单项选择]反映结构工程中混凝土工艺方案技术特性的指标是 ______。
A. 方案占地面积 B. 现浇混凝土强度 C. 构配件是否能保证供应 D. 要求的技术复杂程度和难易程度以及对技术准备工作的要求 [单选题]双相强制对流换热区汽水两相流的流型是( )。
A.环状流动 B.雾状流动 C.弹状流动 D.泡状流动 我来回答: 提交
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