问题 问答题

案例:某施工单位承揽了一项水利工程的总承包工程,在施工过程中发生了如下事件。事件1:施工单位与某材料供应商所签订的材料供应合同中未明确材料的供应时间。急需材料时,施工单位要求材料供应商马上将所需材料运抵施工现场,遭到材料供应商的拒绝,两天后才将材料运到施工现场。事件2:某设备供应商由于进行设备调试,超过合同约定的期限交付施工单位订购的设备,恰好此时该设备的价格下降,施工单位按下降后的价格支付给设备供应商,设备供应商要求以原价执行,双方产生争执。事件3:施工单位与某施工机械租赁公司签订的租赁合同约定的期限已到,施工单位将租赁的机械交还租赁公司并交付租赁费,此时,双方签订的合同终止。事件4:该施工单位与某分包单位所签订的合同中明确规定要降低分包工程的质量,从而减少分包单位的合同价格,为施工单位创造更高的利润。

事件4中的合同当事人签订的合同是否有效

答案

参考答案:合同当事人签订的合同无效。

多项选择题
单项选择题

"The impulse to excess among young Britons remains as powerful as ever, but the force that used to keep the impulse in check has all but disappeared," claimed a newspaper. Legislation that made it easier to get hold of a drink was "an Act for the increase of drunkenness and immorality", asserted a politician.

The first statement comes from 2005, the second from 1830. On both occasions, the object of scorn was a parliamentary bill that promised to sweep away " antiquated" licensing laws. As liberal regulations came into force this week, Britons on both sides of the debate unwittingly followed a 19th-century script.

Reformers then, as now, took a benign view of human nature. Make booze cheaper and more readily available, said the liberalisers, and drinkers would develop sensible, continental European-style ways. Nonsense, retorted the critics. Habits are hard to change; if Britons can drink easily, they will drink more.

Worryingly for modern advocates of liberalisation, earlier doomsayers turned out to be right. Between 1820 and 1840, consumption of malt (which is used to make beer) increased by more than 50%. Worse, Britons developed a keener taste for what Thomas Carlyle called "liquid madness"—gin and other spirits.

The backlash was fierce. Critics pointed to widespread debauchery in the more disreputable sections of the working class. They were particularly worried about the people who, in a later age, came to be known as "ladettes". An acute fear, says Virginia Berridge, who studies temperance at the London School of Hygiene and Tropical Medicine, was that women would pass on their sinful ways to their children.

In the 19th century, temperance organisations set up their own newspapers to educate the public about the consequences of excess. That, at least, has changed: these days, the mainstream media rail against the demon drink all by themselves.

According to the text, the phrase "the second" in the second paragraph refers to()

A. the statement by a critic

B. the increase of drunkenness

C. the decline of immorality

D. the assertion by a politician