化简-x3-x-1x，得（ ） A．（x-1）-x B．（1-x）-x C．-（x+1

咽失弛缓症，即咽肌瘫痪性吞咽困难，的诊断依据包括（）

A.间接喉镜见梨状窝有食物残留，患侧声带固定于旁正中位

B.X线钡餐检查见钡剂停留在环咽肌水平以上

C.食管镜检查环咽肌紧闭，有食物或钡剂停留，食管镜不易通过

D.肌内注射新斯的明2mg，症状在0.5小时内可明显减轻

E.病人常伴软腭麻痹

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.

The phrase "hate crime" (Line 4, Paragraph 2) refers to the crime motivated by ().

A. the hate for enemy

B. racial hate

C. the hate for homoerotism (同性恋)

D. the hate for the rich

Leukemia

机场管制塔台装设的，如果是指示出几个地点的风向、风速值的多通道指示器时，管制员发出起飞许可时，原则上通知靠近（）的风向、风速值；发落地许可时，原则上通知（）附近的风向、风速值。

A.起飞滑跑开始，接地点

B.升空区，接地点

C.升空区，滑离段

D.起飞滑跑开始，滑离段

杭州碧溪外贸公司（杭州公司）与房西有限责任公司（香港公司）因钢材贸易发生纠纷，依据合同仲裁条款，杭州公司向中国国际经济贸易仲裁委员会申请仲裁，要求香港公司赔偿因钢材不合格造成的损失。经审理，仲裁委员会裁决驳回了杭州公司的请求，同时裁决杭州公司支付香港公司钢材价款30万美元。香港公司申请被执行人住所地的杭州市中级人民法院强制执行，而杭州公司认为，香港公司未提出反请求，仲裁委员会就裁决杭州公司支付30万美元，实属裁决不公。杭州公司可如何行使权利？

A．向仲裁机构所在地的北京市第二中级人民法院申请不予执行裁决

B．向被执行人住所地的杭州市中级人民法院申请撤销裁决

C．向仲裁机构所在地的北京市第二中级人民法院申请撤销裁决

D．向被执行人住所地的杭州市中级人民法院申请不予执行裁决