粘质土和高液限粘土不能用来填筑高度小于5m的路堤。

题型:判断题

问题:

粘质土和高液限粘土不能用来填筑高度小于5m的路堤。

考点:桥梁工程桥梁工程题库
题型:判断题

直线L1:ax+3y+1=0,  L2:2x+(a+1)y+1=0, 若L1∥L2,则a=(    )

A.-3

B.2

C.-3或2

D.3或-2

题型:判断题

       我国领土最南端和最北端的纬度位置分别约为4°N和53°N,这决定了我国大部分地区位于地球五带中的 [ ]

A.热带

B.北温带

C.南温带

D.北寒带

题型:判断题

需要从国家基本药物目录中调出的品种是()。

A.药品标准被取消的

B.发生严重不良反应的

C.含有国家濒危野生动植物药材的

D.国家食品药品监督管理部门撤销其药品批准证明文件的

题型:判断题

Stress is our response to threatening or (1) events. We may experience different levels of stress depending on the (2) , meaning the events or circumstances that cause us to feel stress. Stressors can be classified into (3) main categories: (4) events, personal stressors, and (5) stressors. Cataclysmic events are major events that cause stress (6) , immediately, for a great many people at once. Personal stressors are major life events that create stress, including (7) life events. Background stressors are (8) hassles, or minor irritations, or (9) background stressors. Repeated exposure to stressors has both psychological and (10) consequences. The long- term consequence is that body tissues such as the heart and blood vessels can begin to (11) . The (12) system functions less effectively, and (13) our ability to fight off illnesses.
The General Adaptation (14) explains the sequence of physiological reactions to stress. There are three phases to G. A. S. The first is the " alarm and (15) " phase: we respond with alarm, and take (16) to remove the stressor. The second phase is the (17) stage: we fight against the stressor or try to cope with the stressor. This can lead to the third phase. (18) . The exhaustion phase may be an (19) way of trying to avoid the stressors. The body may be telling us that we need to do whatever is (20) to remove the stressor.

Stress is our response to threatening or (1) events. We may experience different levels of stress depending on the (2) , meaning the events or circumstances that cause us to feel stress. Stressors can be classified into (3) main categories: (4) events, personal stressors, and (5) stressors. Cataclysmic events are major events that cause stress (6) , immediately, for a great many people at once. Personal stressors are major life events that create stress, including (7) life events. Background stressors are (8) hassles, or minor irritations, or (9) background stressors. Repeated exposure to stressors has both psychological and (10) consequences. The long- term consequence is that body tissues such as the heart and blood vessels can begin to (11) . The (12) system functions less effectively, and (13) our ability to fight off illnesses.
The General Adaptation (14) explains the sequence of physiological reactions to stress. There are three phases to G. A. S. The first is the " alarm and (15) " phase: we respond with alarm, and take (16) to remove the stressor. The second phase is the (17) stage: we fight against the stressor or try to cope with the stressor. This can lead to the third phase. (18) . The exhaustion phase may be an (19) way of trying to avoid the stressors. The body may be telling us that we need to do whatever is (20) to remove the stressor.

题型:判断题

高速离心泵之所以不会产生汽蚀,是因为广泛地采用诱导轮提高了泵的()。

A、出口压力

B、级间压力

C、进液压力

D、离心力

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