单词拼写。 1.Their plans seem good in________

题型:填空题

问题:

单词拼写。

1.Their plans seem good in________(理论) but won't work in practice.

2.One of their first________(商业的) products was an electronic typewriter.

3.________(总共),about 50 NATO aircrafts took part in the attack.

4.The blood samples have been sent away for________(分析).

5.We will continue the race,________of (不顾,不管) the weather.

6.When the fire got out of control,the captain told the sailors to________(放弃) the ship.

7.One or two glasses of wine every day can be________(有益的).

8.Full________(准备) are being made to ensure the art exhibition will go on smoothly.

9.He suggests the product of labour should be equally________(分配).

10.The government's first task is________(起草) a new constitution for the country.

考点:单词、词组
题型:填空题

已知反应:BeCl2+Na2BeO2+2H2O===2NaCl+2Be(OH)2↓能完全进行,则下列推断正确的是  [ ]

A.Na2BeO2溶液的pH>7,将其蒸干并灼烧后得到的残留物为BeO

B.BeCl2溶液的pH<7,将其蒸干并灼烧后得到的残留物可能为Be(OH)2

C.Be(OH)2既能溶于盐酸,又能溶于NaOH溶液

D.BeCl2水溶液的导电性强,故BeCl2是离子化合物

题型:填空题

下列()不属于园林苗圃的辅助用地。

A、繁殖区

B、办公区

C、道路区

D、排灌区

题型:填空题

标准差主要受哪种影响().

A.系统因素

B.偶然因素

C.人为因素

D.设备因素

题型:填空题

渣中碱性氧化物与酸性氧化物的质量百分数之比浓度之比值称为()。

题型:填空题

买卖合同中的装运期有哪些规定办法?

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