水泵在停车之前，若能使（）为零时可避免水击。 A.功率 B.效率 C.流量

水资源短缺已成为浙江省可持续发展的制约因素。读图回答下列各题。

小题1:浙江省人均水资源低于全国平均水平，并接近国际公认警戒线的原因是（    ）

①人口密度大 ②水资源污染严重 ③降水总量少 ④降水季节分配均匀

A．①②　　

B．②③

C．②④　　　　

D．③④小题2:下列关于节约水资源的措施，正确的是（    ）                           

A．合理开采地下水

B．提高工业用水重复利用率

C．海水淡化

D．修建更多的跨流域调水工程小题3:水资源短缺对浙江省经济发展产生的影响是（    ）

A．促进城乡一体化

B．增加水稻播种面积

C．促使产业结构调整

D．加快南水北调进程

CrWMn是一种（）。

A、铁素体不锈钢

B、马氏体不锈钢

C、耐热钢

D、冷作模具钢

在保险活动中，当保险标的发生推定全损时，投保人或被保险人将保险标的的一切权益转让给保险人，而请求保险人按照保险金额全数赔付的行为称为（）。

A.权利代位

B.代位求偿

C.委付

D.索赔

E.上缴有关部门

United States hospitals have traditionally relied primarily on revenues from paying patients to offset losses from unreimbursed care. Almost all paying patients now rely on governmental or private health insurance to pay hospital bills. Recently, insurers have been strictly limiting what they pay hospitals for the care of insured patients to amounts at or below actual costs.
Which of the following conclusions is best supported by the information above

A．Although the advance of technology has made expensive medical procedures available to the wealthy, such procedures are out of the reach of low-income patients.

B．If hospitals do not find ways of raising additional income for unreimbursed care, they must either deny some of that care or suffer losses if they give it.

C．Some patients have incomes too high for eligibility for governmental health insurance but are unable to afford private insurance for hospital care.

D．If the hospitals reduce their costs in providing care, insurance companies will maintain the current level of reimbursement, thereby providing more funds for unreimbursed care.

E．(E) Even though philanthropic donations have traditionally provided some support for the hospitals, such donations are at present declining.

使足跖屈的肌是（）

A.腘肌

B.比目鱼肌

C.趾长屈肌

D.长屈肌

E.胫骨后肌