题目内容
(请给出正确答案)
[单选题]
二氧化硫的阈限值为()。
A.3mg/m3(2ppm)
B.30mg/m3(20ppm)
C.5.4mg/m3(2ppm)
D.2mg/m3(5.4ppm)
查看答案
如果结果不匹配,请 联系老师 获取答案
A.3mg/m3(2ppm)
B.30mg/m3(20ppm)
C.5.4mg/m3(2ppm)
D.2mg/m3(5.4ppm)
A.22mg/m3(15m3/mL)
B.72mg/m3(50m3/mL)
C.15mg/m3(10m3/mL)
D.30mg/m3(20m3/mL)
A.≤10万
B.≤3.52万
C.≤35万
D.≤352万
A.阶梯法
B.极限法
C.平均差误法
D.恒定刺激法
A.160km/h,3200m
B.160km/h,3200m
C.200km/h,6400m
D.200km/h,3200m
《中国铁路总公司技术管理规程》动车组列车制动初速度为250km/h时,紧急制动距离限值为()m;
A.3500
B.3200
C.2800
D.2000
正常人的肾糖阈为 ()
A.160~180mg/100mL
B.120~180mg/100mL
C.100~120mg/100mL
D.150~200mg/100mL
E.180~200mg/100mL