《煤矿安全规程》规定:矿车的车梁、碰头的连接装置,其安全系数不得小于()。
A、4
B、5
C、6
D、7
参考答案:C
Water is (41) important of all the things we (42) and drink. Not many people understand this, (43) it’s quite true. The human body (人体) can go (44) food for a long time, but two (45) three days without water can usually (46) people die. Many people don’ t understand how much water the human body needs to work well and many people do not drink (47) , even (48) hot weather. Our body is (49) water, about 65% to 75%, ff we do not have enough water, we’ll (50) tired and many will get ill. So you see, how important water is to us all.
[A] eat [B] have [C] like
病人表现为假神,主要是由于()
A.气血不足,精神亏损
B.机体阴阳严重失调
C.脏腑虚衰,功能低下
D.精气衰竭,虚阳外越
E.阴盛于内,格阳于外