在△ABC中,AB=3,A=45°,B=60°,则BC等于( ) A.3-3 B.2

题型:选择题

问题:

在△ABC中,AB=
3
,A=45°,B=60°
,则BC等于(  )
A.3-
3
B.
2
C.2D.3+
3
考点:正弦定理
题型:选择题

一辆汽车0.6小时行驶14.4千米,照这样计算,1.8小时可以行驶多少千米?

题型:选择题

属于阴中求阳的方剂是()

A.肾气丸

B.六味地黄丸

C.玉女煎

D.左归丸

E.一贯煎

题型:选择题

在胀接碳钢管时,加热到退火处理温度后,保温(),取出后用石棉包住缓冷。

A、3~5min

B、5~8min

C、8~10min

D、10~15min

题型:选择题

非营利组织的日常性采购的采购金额相对来说怎么?

题型:选择题


Directions: There are 10 blanks in the following passage. For each numbered blank, there are 4 choice marked A, B, C and D.

During recent years we have heard much about "race": how this race does certain things and that race believes certain things and so on. Yet, the (51) phenomenon of race consists of few surface indications.
We judge race usually from the coloring of the skin: a white race, a brown race, a yellow race and a black race. But (52) you were to remove the skin you could not tell anything about the race to which the individual belonged. There is nothing in physical structure, the brain or the internal organs to (53) a difference.
There are four types of blood. All types are found in every race, and no type is distinct to any race. Human brains are the (54) No scientists could examine a brain and tell you the race to which the individual belonged. Brains will (55) in size, but this occurs within every race. (56) does size have anything to do with intelligence. The largest brain ever examined belonged to a person of weak (57) . On the other hand, some of our most distinguished people have had (58) brains.
Mental tests which are reasonably (59) show no differences in intelligence between races. High and low test results both can be recorded by different members of any race. (60) equal educational advantages, there will be no difference in average standings, either on account of race or geographical location.

A.complete

B.full

C.total

D.whole

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