下列叙述中，"6个月后无效，予药物治疗"属于（）下列叙述中，"使其血压降至130／8

2008年9月25日21时10分“神舟”七号载人飞船发射升空，进入预定轨道绕地球自西向东作匀速圆周运动，运行轨道距地面343km．在此圆轨道上飞船运行周期约为90分钟．绕行过程中，宇航员进行了一系列科学实验，实现了我国宇宙航行的首次太空行走．在返回过程中，9月28日17时30分返回舱主降落伞打开，17时38分安全着陆．下列说法中正确的是（　　）

A．飞船的圆轨道半径大于同步卫星的轨道半径

B．飞船在圆轨道上运行的速度大于同步卫星的运行速度

C．飞船在圆轨道上运行的向心加速度大于同步卫星运行的向心加速度

D．在返回舱主降落伞打开后至着地前宇航员处于失重状态

The car over there isn’t _______.It belongs to ______.

A．her; me

B．her;mine

C．hers; me

D．hers; mine

频谱多普勒

True, some of the attacks against whites by blacks are for money and valuables. But, others ale revenge assaults by blacks for a real or imagined racial insult. It is equally true that the vast majority of violent crimes against whites are committed by whites, while the vast majority of violent crimes against blacks are committed by other blacks. Yet even after discounting crimes that are hastily and erroneously (错误地，不正确地) tagged as racially motivated, many blacks do attack whites because they all white. A 1998 Justice Department study confirmed that nearly 20% of the more than 4,000 hate crimes well committed against whites, and their attackers were blacks. The Southern Poverty Law Center also notes that there is a huge escalation in black-on- white violence from nearly none at the beginning of the 1990s.

A collection of white supermacists and rightist extremist groups have eagerly made black-on- white violence a wedge issue in their movement to paint blacks as the prime racial hate mongers in America. The New Century Foundation, an ultra-conservative think-tank, has launched a full- blown national campaign to alert whites to the danger of black hate crimes. These groups and individuals magnify hate crimes by blacks in order to back their social agenda. They oppose affirmative action programs and per hate crime laws. They downplay, or justify, the proliferation of white-supremacist-tinged paramilitary groups, police violence, and racial profiling. And they lobby hard for more prisons, police, and tougher laws.

Black-on-white violence also reinforces white fears of blacks as the ultimate menace to society. When blacks say or do nothing about these attacks, it is taken by some as a tacit signal that blacks put less value on white lives than black lives. This is a terrible price for black silence on hate crimes committed by blacks.

What can be inferred according to this passage().

A. Some crimes are racially motivated.

B. All black people hate white people.

C. There’s racial discrimination only in America.

D. America is not a good place for immigrants for its serious black-on-white violence.

根据《煤矿重大安全隐患认定办法（试行）》之规定：瓦斯检查员配备数量不足的，不属于煤矿重大安全生产隐患。