若0<a<1,则下列各式中正确的是[ ] A.loga(1-a)>0 B.a1-

题型:选择题

问题:

若0<a<1,则下列各式中正确的是[ ]

A.loga(1-a)>0

B.a1-a>1

C.loga(1-a)<0

D.(1-a)2>a2

考点:指数函数的图象与性质对数函数的图象与性质
题型:选择题

在某工程施工过程中,监理工程师检查实际进度时发现工作M的总时差由原计划的2天变为-1天,若其他工作的进度均正常,则说明工作M的实际进度( )。

A.提前1天,不影响工期

B.拖后3天,影响工期1天

C.提前3天,不影响工期

D.拖后3天,影响工期2天

题型:选择题

小茴香的主治病证有

A.经寒痛经

B.虫积腹痛

C.胃寒呕吐

D.寒疝腹痛

E.睾丸偏坠胀痛

题型:选择题

如图通过管路,水被水泵吸出,其流量为40L/s。d1=200mm,d2=150mm,不计水头损失,h=1.5m,水泵全效率为0.7,则水泵轴功率为()kW。

A.10.68

B.10.58

C.11.57

D.11.34

题型:选择题

Middletown’s police currently remove an apparently abandoned car from the streets about two months after it is reported. The police have been unfairly criticized for allowing such cars to be vandalized during this period. Because it is illegal for car owners to abandon cars on the street, police need not be concerned about protecting such cars.
Which of the following, if true, most seriously weakens the argument above

A.In the past, vehicles abandoned in Middletown were removed from the streets an average of four months after initial reports to police.

B.In one recent year, more than 150 abandoned vehicles were vandalized in Middletown, but police made no arrests for those actions.

C.Some cars initially classified by Middletown’s police as abandoned were later reclassified as stolen vehicles.

D.Middletown’s understaffed police force must give the disposition of abandoned cars low priority because of the number of violent crimes now committed there.

E.(E) In the most recent year for which data are available, there were 28 percent fewer reports of abandoned vehicles than the yearly average for the previous ten years.

题型:选择题

油气从烃源岩进入到储集层是什么运移?()

A.二次运移

B.初次运移

C.再次运移

更多题库