【单选题】Pain is vital to the survival of human being and all mammalian because
A.
it can be found in vertebrates.
B.
it consists of nervous elements.
C.
it underlies mental life.
D.
it is a response to harmful stimuli.
【单选题】It can be inferred from the last paragraph that human perceptual mechanism ______.
B.
provides objective and straightforward way for observation
C.
can provide some sort of correction on the basis of experience
【单选题】Human being is the only species that understands the concept of risk, so we can avoid exposing ourselves to real dangers.
【判断题】胎盘滞留是指胎儿娩出30分钟后胎盘仍未娩出者。
【单选题】外啮合齿轮泵存在的困油现象带来的危害有()
【单选题】The point the author tried to make in the last paragraph is that______.
A.
human being can live self-reliant and independent of families and friends
B.
human being are social animals that can not live in stark isolation
C.
human being are usually so nostalgic that they are stuck with the past
D.
human being are so deeply attached to home that it's hard for them to stay away from family
【单选题】下例各项中,属于提插补泻法之补法的操作是()
【单选题】关于IgA肾病的临床表现,下列哪项是错误的()。
C.
常在上呼吸道感染后1-3周出现急性肾炎综合征症状
【单选题】假如一个城市只有一个盛行风时,且与此相对的方向风频最小,那么工业用地和居住用地应分别位于( )方向比较合适。