板式换热器需要降低供水温度时，应先缓慢关小（）阀门。A、高温出口 B、低温出口 C、

对下列事实的解释，合理的是（　　）

A．A

B．B

C．C

D．D

The International Whaling Commission’s (IWC) decision to retain its ban on whaling does not mean that the killings will stop. Quite the (1) .

Save the Whale. It’s a phrase which became annoying with (2) , an unfavorable shorthand for liberal consciences. How appalling, then, that in the year 2010, it should be pressed (3) service again, to fight the whaling nations: Norway and Iceland, who exempted themselves from the 1986 prohibition (4) by the IWC, and Japan, which hunts whales under cover of " (5) research".

I am completely (6) by this week’s events in Morocco, where talks broke down. In my heart, I agree with those who have (7) the news that this year’s negotiations of the IWC have broken up, and (8) the prohibition would not be lifted (as the US proposed in a desperate (9) to break the deadlock). Yet reason (10) something else. If we do not (11) some kind of new control, the (12) will be able to go on with their slaughter (13) . Membership of the IWC is (14) , and the ban was only ever intended to be (15) . Japan, which has been buying the votes of nations with no interest in whaling (only in the 16 Japan offers in turn), will continue to press its case, having invested millions of dollars in its (17) . Geoffrey Palmer, New Zealand’s Commissioner at the IWC, has proposed a year-long (18) period. In the meantime, more whales will die.

We stand at a crossroad for whales. We see the (19) existence of these animals as an indicator of ecological threat. As symbols of an endangered world, they evoke, and provoke, a feeling that they have the same qualities as human on a scale equal to their size and supposed (20) . To some this is so much sentimental words in the New Age.

3（）

A.to

B.for

C.into

D.of

信息系统开发的基本内容包括下面Ⅰ、Ⅱ、…、Ⅴ等5条中的______。 Ⅰ、系统建设的可行性研究； Ⅱ、系统研制队伍的建立； Ⅲ、系统开发策略、方法和步骤的选择和确定； Ⅳ、开发工具和开发环境的选择和提供； Ⅴ、系统的设备配置和数据库总体设计。

A．Ⅱ、Ⅲ、Ⅳ、Ⅴ

B．Ⅲ、Ⅳ、Ⅴ

C．全部

D．Ⅰ、Ⅱ、Ⅲ、Ⅳ

三相电压不平衡故障的触发条件是什么?

游乐设施运营要求包括（）。

A、每天运营前应做好安全检查，检查内容根据各单位相关规章制度要求进行。

B、每天运营前空载试机运行应不少于二次，确认一切正常后，才能开机营业。

C、每天运营中应严格按照各岗位操作规程进行作业，并注意安全。

D、每天运营后应清洁、整理检查各承载物、附属设备及游乐场地，确保其整洁有序，无安全隐患。

E、做好当天游乐设施运转情况记录，并签字确认。