主页
学科
搜索
账户
常见问题
当前学科：中级公路养护工
题目：
填空题
边沟应分段设置横向排水沟，其分段长度，一般地区不超过（）m，多雨地区不超过（）m；若为三角形边沟，其长度不宜超过（）m。
答案：
<查看本题扣1积分>
查看答案
答案不对？请尝试站内搜索
推荐知识点:
Today ,as in every other day of the year ,more than 3000 U.S. adlescents will smoke their first cigarette on their way to becoming regular smokers as adults. During their lifetime,it can be expected that of these 3000 about 23 will be murdered,30 will die in traffic accidents, and nearly 750 will be killed by a smoking-related disease. The number of deaths attributed to cigarette smoking outweithts all other factors, whether voluntary or involuntary, as a cause of death. Since the late 1970s, when daily smoking among high school seniors reached 30 precent , smoking rates among youth have declined . While the decline is impressive ,several important issues must be raised. First, in the past several years,smoking rates among youth have declined very little. Second,in the late 1970s ,smoking among male high school seniors exceeded that among female by nearly 10 percent . The statistic is reversing.Third ,several recent studies have indicate high school dropouts have excessively high smoking rates, as much as 75 percent . Finally, thouth significant declines in adolescent smoking have occurred in the past decade,no definite reasons for the decline exist. Within this context,the Naional Cancer Instiute (NCI) began its current effort to determine the most effecive measures to reduce smoking levesl among youth. By "dropout" the author means（）.
中耳的组成为（）
能够真正反映岩石单轴压缩破坏的形态是（ ）。
食品加热杀菌的方法包括（）
女孩12岁，1周前受凉后咳嗽、发热，3天后四肢乏力，发麻，说话口齿不清，逐渐加重而不能行走入院。检查：双眼睑闭合不全，不能皱额，鼓腮，四肢弛缓性瘫痪，肌力2级。诊断可能是（）
业主与施工总承包管理单位或CM单位的合同一般采用（）
治疗支气管肺炎（肺炎喘嗽）心阳虚衰证的首选方剂是（）。治疗支气管肺炎（肺炎喘嗽）邪陷厥阴证的首选方剂是（）。
与“白色”对应的蒙古语是：（）
急性心肌梗死时，最先恢复正常的心肌损伤标志物是（）
为什么能用蒸馏的方式得到不同的燃料油品？