减速行驶时,()松开(关至最小位置)并进行轻微制动,发动机处于强制怠速状态,其油耗量

题型:单项选择题

问题:

减速行驶时,()松开(关至最小位置)并进行轻微制动,发动机处于强制怠速状态,其油耗量即为正常怠速油耗。

A.进气门

B.节气门

C.排气门

D.气门

考点:汽车运用工程汽车使用经济性汽车使用经济性题库
题型:单项选择题

某场地自0~8m为黏性土,8.0m以下为基岩,场地中有条形基础,埋深为2.0m,底面宽度为3.0m,基底附加压力为250kPa。则基础中心线下的黏性土层的平均附加应力为()kPa。

A.76

B.137

C.152

D.202

题型:单项选择题

典型的胆结石B超图像应是()

A.低回声光团,无声影

B.不均匀强回声光团,无声影

C.强回声光团,无声影

D.强回声光团,有声影

E.低回声光团,无声影

题型:单项选择题

When she looked ahead, Florence Chadwick saw nothing but a solid wall of fog. Her body was numb(全身麻木). She had been swimming for nearly sixteen hours. Already she was the first woman to swim the English Channel in both directions. Now, at age 34, her goal was to become the first woman to swim from Catalina Island to the California coast.

On that fourth of July morning in 1952, the sea was like an ice bath and the fog was so dense she could hardly see her support boats. Sharks cruised toward her lone figure, only to be driven away by rifle shots. Against the cold sea, she struggled on ---- hour after hour ---- while millions watched on national television.

Alongside Florence in one of the boats, her mother and her trainer offered encouragement. They told her it wasn't much farther. But all she could see was fog. They urged her not to quit. She never had … until then. With only a half mile to go, she asked to be pulled out.

She told a reporter hour later, "Look, I'm not excusing myself, but if I could have seen land I might have made it." It was not tiredness or even the cold water that defeated her. It was the fog. She was unable to see her goal.

Two months later, she tried again. This time, despite the same dense fog, she swam with her goal clearly pictured in her mind. She knew that somewhere behind that fog was land and this time she made it! Florence Chadwick became the first woman to swim the Catalina Channel, eclipsing(超出) the men's record by two hours!

44. Florence Chadwick was the first woman to swim across ________.

A.the English Channel             B.the Catalina Channel  

C.the California coast              D.Catalina Island

45. Florence failed on her first trial mainly because of _______.

A. the sharks     B. the tiredness      C. the cold water     D. the bad weather

46. The underlined word “then” in this passage refers to the period when _______.

A. she had swum nearly sixteen hours           B. sharks swam toward her

C. she couldn’t see her support boats          D. millions of people watched her on TV

47. We can infer from the passage that it was ______ that resulted in her success.

A. her family’s encouragement            B. her iron will 

C. her swimming skills                  D. the good weather

题型:单项选择题

患者男性,39岁,65kg。因腹膜后肿瘤入院手术,入院时血压120/70mmHg,脉率68次/分钟,呼吸14次/分钟,心、肺、肝、肾功能正常,血红蛋白130g/L,凝血功能正常,估计手术较困难,失血较多,拟采取血液保护措施。

提示:本例发现纤维蛋白原较低,需予补充。可用于补充纤维蛋白原的制品有()

A.冻干人纤维蛋白原的制品有

B.普通冰冻血浆

C.冻干凝血酶原复合物

D.冷沉淀

E.新鲜冰冻血浆

F.冻干人纤维蛋白原

题型:单项选择题

从事一般放射性工作的人员应多长时间进行体格检查()

A.1~2年

B.2~3年

C.3~4年

D.4~5年

E.0.5~1年

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