心力衰竭最常见的病因是() A.冠心病 B.风湿性心脏病 C.肺动脉高压 D.心律失

题型:单项选择题

问题:

心力衰竭最常见的病因是()

A.冠心病

B.风湿性心脏病

C.肺动脉高压

D.心律失常

E.脓毒症

考点:临床医学检验临床血液技术病理生理学病理生理学题库
题型:单项选择题

大陆漂移假说是(  )提出来的.

A.哥伦布

B.麦哲伦

C.魏格纳

D.冉•阿让

题型:单项选择题

某白炽灯泡标着“PZ220-40“,它的灯丝电阻是______Ω.该灯泡在110V电压下工作时,它的实际功率是______ W.

题型:单项选择题

阅读下面短文,从短文后各题所给的四个选项(A、B、C 和 D)中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

                                    A Heroic Driver

Larry works with Transport Drivers. Inc. One morning in 2009. Larry was  41

along 165 north after delivering to one of his    42   . suddenly, he saw a car with its bright lights on.    43    he got closer, he found 44    vehicle upside down on the road. One more look and he noticed    45    shooting out from under the    46    vehicle. Larry pulled over, set the brake and    47   the fire extinguisher (灭火器). Two good bursts from the extinguisher and the fire was put out.

The man who had his bright lights on    48    and told Larry he had    49    an emergency call. They    50    heard a woman’s voice coming from the wrecked (毁坏的) vehicle.    51   the vehicle, they saw that a woman was trying to get out of the broken window. They told her to stay    52    until the emergency personnel arrived,    53    she thought the car was going to    54   . Larry told her that he had already put out the fire and she should not move    55    she injured her neck.

Once fire and emergency people arrive, Larry and the other man    56    and let them go to work. Then, Larry asked the    57    if he was needed or    58    to go. They let him and the other man go.

One thing is    59   —Larry went above and beyond the call of duty by getting so close to the burning vehicle! His    60    most likely saved the woman’s life.

48()

A. came down

B. came through

C. came in

D. came over

题型:单项选择题

评价土基的强度用()来表示。

题型:单项选择题

举例说明碳素结构钢的牌号是由哪几部分组成的?各部分含意如何?

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