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【简答题】
弥散性血管内凝血症的期可选用（）|早产儿、新生儿出血宜选用（）|术后的异常出血及鼻、喉、口腔止血宜选用（）|血液透析时防止血栓形成宜选用（）|长期服用广谱抗生素，导致出血倾向选用（） A. 低分子量肝素 B. 维生素K C. 尿激酶 D. 氨甲苯酸 E. 肝素
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举一反三
【单选题】设X线管的阳极倾角为θ，下列公式正确的是( )
A.
有效焦点=实际焦点xcosθ
B.
有效焦点=实际焦点x sinθ
C.
实际焦点=有效焦点x sinθ
D.
实际焦点=有效焦点x cosθ
E.
有效焦点=实际焦点×θ
【单选题】设X线管的阳极倾角为θ，下列公式正确的是（）
A.
实际焦点 = 标称焦点 *cos θ
B.
标称焦点 = 实际焦点 *sin θ
C.
实际焦点 = 标称焦点 *sin θ
D.
标称焦点 = 实际焦点 *cos θ
【单选题】In the 1980s, the amount of money one made appeared to be the only measurement of his or her success.
A.
Y
B.
N
C.
NG
【单选题】What's the main measurement used for protecting the safety and health of public in U.S. before World War II?
A.
Hazard controlling
B.
Systematic safety management
C.
Corporate downsizing
D.
Safety training
【简答题】老子的主要思想记录在哪部著作中？
【多选题】The transformer cabin is located at the center of the locomotive and consists of the main transformer,( ) , and three kinds of ( )s for the protection, the measurement and the control of the loc...
A.
the PFC switch cubicle
B.
AC current inductors
C.
DC current inductors
【单选题】The U.S. system of measurements, also called the English measurement system, has five different types of ounces. Which is NOT one of them?
A.
avoirdupois ounces
B.
paper ounces
C.
imperial fluid ounces
D.
apothecary ounces
【单选题】设X线管的阳极倾角为θ，下列公式正确的是（）
A.
标称焦点一实际焦点×cosθ
B.
标称焦点一实际焦点×sinθ
C.
实际焦点一标称焦点×sinθ
D.
实际焦点一标称焦点×cosθ
E.
标称焦点一实际焦点×θ
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