- 平抛运动
- 共7059题
塔式起重机主要由( )组成。
A．基础、塔身和塔臂
B．基础、架体和提升机构
C．金属结构、提升机构和安全保护装置
D．金属结构、工作机构和控制系统
正确答案
D
解析
暂无解析
We offer product demonstrations to all ______ clients, as promised in our advertisements.
A. prevented
B. descriptive
C. potential
D. assured
正确答案
C
解析
高级问题 产品的演示是对谁做的 这里自然应当将“潜在的顾客”吸引过来变成实际的顾客。与此类似，prospective，probable也可以使用，这一点在第3套试卷的解析中已经提到过。
[高频词语] product demonstrations 产品演示 as promised 如同承诺过的 prevent 预防 descriptive 描写的 assured 确定的
Questions 150-152 refer to the following letter.
January 28, 2007
Mr. Michael John
PeaceCon Corp.
1004 Western St.
New York 456159
Dear Mr. Michael John,
By way of introduction, we own properties in the East Area of New York City. One of the major accounting firms suggested we (150) you regarding the development of one of these properties. It (151) of a piece of land, in excess of 14,000 square feet that is zoned to permit the building of approximately 170,000 square feet, for retail, commercial, hotel uses, and casino. If you have any interest in being part of this development, please contact us (152) at the above address, or call us at 222-356-4747 (fax 222-356-4748), and we would be happy to send to you further information.
Very truly yours,
Richard Simpson
A. contacted
B. contact
C. contacting
D. contacts
正确答案
B
解析
中级问题 前面的suggest是表示主张、命令、要求、建议、忠告等的动词，它后面的宾语从句省略了should，从句中的谓语应该用动词原形。这里we前面的that也省略了，这也是常见的，尤其是that在及物动词后面的时候。
为在考试中取得好的名次，学生会努力学习，这里的好名次属于( )。
A．正强化物
B．负强化物
C．一级强化物
D．二级强化物
正确答案
A,D
解析
[解析] 当某种刺激增加时，有机体反应概率增加，该刺激即为正强化物；二级强化物是与一级强化物配对后起强化作用的刺激，由社会文化决定的特权、社会地位、财富、名声等构成决定人类行为的二级强化物。
在同一水平直线上的两位置分别沿同水平方向抛出两小球A和B，A、B两球先后经过空中的P点，它们的运动轨迹如图所示．不计空气阻力，下列说法中可能正确的是（ ）
正确答案
我国发给公民出国旅游的_次性有效的护照是（）。
A．外交护照
B．公务护照
C．旅游护照
D．普通护照
正确答案
B
解析
暂无解析
对焊机的额定功率为200kV・A时，一次电压为380V时的导线截面应不小于( )。
A．70mm2
B．50mm2
C．45mm2
D．35mm2
正确答案
A
解析
暂无解析
下列哪项不是自发性心绞痛的特点
A．休息或夜间发作
B．可持续15～30分钟
C．含服硝酸甘油片不易缓解
D．心电图出现异常Q波
E．血清酶一般正常
正确答案
D
解析
暂无解析
长期使用糖皮质激素时，为什么不能骤然停药而必须逐渐减量
正确答案
长期大量使用糖皮质激素类药物，可使血液中的糖皮质激素浓度很高，从而抑制腺垂体分泌和合成促肾上腺皮质激素(ACTH)，还可使腺垂体对下丘脑促肾上腺皮质激素释放激素(CRH)的反应性减弱。由于ACTH对肾上腺皮质束状带细胞的生长和分泌功能有促进作用，ACTH的分泌减少和停止必然会造成肾上腺皮质束状带逐渐萎缩，分泌减少。患者如突然停药，将因自身分泌不足而使血液中糖皮质激素水平突然降低，产生一系列皮质激素缺乏的症状，如血糖下降，血压下降，神经系统兴奋性下降和对损伤性刺激的抵抗力下降等。因此，须在停药前一段时间内逐渐减量，最好在用药期间间断补充ACTH，以免肾上腺皮质萎缩，引起严重后果。
解析
暂无解析
Questions 160-162 refer to the following advertisement.
Devlin Bootmaker is a company which manufactures and retails a very exclusive luxury brand of boots solely for men.
Devlin Bootmaker was founded fifty-five years ago by Mr. Keith Devlin, a Arizona rancher who found himself wearing out two pairs of boots every year and vowed to make the world better boots. Today his granddaughter still runs the company and actively participates in the design of new boots.
Our factory in Phoenix is state-of-the-art and we are able to handle any sized order. Devlin boots are hand-stitched from the finest leathers. They are well worth the extra cost if you are likely to be using your boots in particularly wet conditions. In addition, the boots are designed for style with contemporary design details added to the classic upper look and a unique outsole design for each style.
We offer a total satisfaction guarantee on all our products. If you are dissatisfied for any reason, simply send them with your receipt directly to the Returns Department at our order processing facilities in Phoenix, Arizona and you will receive a full refund of the purchase price.
Devlin Bootmaker Returns Department:
957 7th Street, Suite C,
Phoenix AZ 85007
Phone: (602) 542-1101
What is true about the Devlin boots
A. It was founded by tailors.
B. It is a family business with a long history.
C. It has been on business for 15 years.
D. It manufactures boots for men and women.
正确答案
B
解析
高级问题
这是一道对戴福林制靴公司的细节把握题。对照选项和原文可知，戴福林制靴是Mr. Keith Devlin创建的，“现在由其孙女经营(Today his granddaughter Still runs the company…)”，因此这家公司是“家族企业(a family business)”。故(B)为正确答案。Devlin Bootmaker was founded fifty-five years ago by Mr. Keith Devlin，a Arizona rancher(戴福林制靴公司是亚利桑那州牧场工人Keith Devlin先生于55年前创建的)，所以选项(A)、(C)和原文内容不一致。另外原文明确提到，这家公司只生产男靴，故选项(D)也与原文不符。
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