请在如图中,画出使用滑轮组时最省力的绳子绕法.
由分析可知,绳子股数越多越省力,根据题意滑轮组最省力的绕法是绳子股数最多,即五股绕线的方法.如图所示:
关于18F-FDG肿瘤显像的适应症正确的是()。
A.寻找肿瘤原发灶
B.肿瘤放、化疗疗效评价
C.肿瘤复发或转移的监测
D.肿瘤的临床分期
E.肿瘤特异性定性诊断
Although interior design has existed since the beginning of architecture, its development into a specialized field is really quite recent. Interior designers have become important partly because of the many functions that might be (51) in a single large building.
The importance of interior design becomes (52) when we realize how much time we (53) surrounded by four walls. Whenever we need to be indoors, we want our surroundings to be (54) attractive and comfortable as possible. We also expect (55) place to be appropriate to its use. You would be (56) if the inside of your bedroom were suddenly changed to look (57) the inside of a restaurant. And you wouldn’t feel (58) in a business office that has the appearance of a school.
It soon becomes clear that the interior designer’s most important basic (59) is the function of the particular (60) .
56().
A.amused
B.interested
C.shocked
D.frightened