一艘轮船的排水量为20000吨,它的自重为9.8×107牛,它可以装载_____

题型:填空题

问题:

一艘轮船的排水量为20000吨,它的自重为9.8×107牛,它可以装载______千克的货物.

考点:浮力及阿基米德原理物体的浮沉条件及其应用重力的计算
题型:填空题

诊断躯体疾病所致精神障碍可依据以下几点,哪项除外()。

A.存在大脑疾病、损害或功能紊乱,或系统性躯体疾病的依据

B.精神症状的出现与脑部或躯体疾病的进展有时间关系(几周或几个月)

C.精神症状随着脑部或躯体疾病的改善而有所缓解

D.无证据提示精神症状的产生有其他病因

E.精神症状常有昼轻夜重的节律变化

题型:填空题

下列哪种脂蛋白Ⅰ型和Ⅴ型高脂血症均明显增加()

A.CM

B.VLDL

C.IDL

D.LDL

E.HDL

题型:填空题

Passage 1In order to produce goods and services, businesses need to buy the required raw materials and equipment. Many firms need to order components or equipment to their own specifications which will later be used to produce a finished product. Firms need reliable suppliers who must be:Stable. Firms that can not supply goods in time to the purchasing company may mean delays and holdups for customers. Thus the purchasing company should check the financial background of its suppliers.Able. The purchasing company must investigate whether potential suppliers are able to make the goods required. This may mean looking at the firm’s equipment and staff expertise if a large or important order is being considered. Some purchasing departments may ask for evidence of the firm having done similar work for other organizations before placing an order. Trade directories and specialist magazines are a useful starting point in this research.Clear. What is required will usually be made clear in a specification. The specification or “spec” will give the exact technical details of what is needed in terms of size, shape, color and performance of the items to be purchased. The supplying firm must then meet this specification exactly.An important problem all purchasing companies have to deal with is whether to use one or two or several suppliers. By using several suppliers it is argued that competition between them will force prices down. And delays or disruption at one supplier will not affect too much. Arguments against this are that researching various suppliers is time-consuming and expensive, and low prices might mean reduced quality. Using fewer suppliers for larger orders can mean that the purchaser receives greater attention and discount for bulk purchases. The suppliers will be more involved in the firm’s business, too.

Having more than one supplier might bring lower price but searching for them might be time-consuming. ( )

题型:填空题

一般来说,跳汰机第一段筛板的筛孔为()毫米左右

A、10

B、15

C、20

D、25

题型:填空题

不属于招标投标活动的当事人的是()。

A.招标人

B.投标人

C.评标专家

D.有关的行政监督部门

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