皮皮学，免费搜题
登录
搜题
【单选题】
《行车中断分预案》规定:特大、重大、较大行车中断事件【红色、橙色、黄色】,包括:轨道交通运营线路,全线行车中断1小时以上,部分区段行车中断3小时以上的预案分级为( )。A.
I级
B.
II级
C.
III级
D.
IV级
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】当两人相距在1.5米之内时，即为私人距离。判断对错
【单选题】2 ) _________4_______ You would have done it on a vacation, right? Treat yourself to this, at least for one day! 3 ) Throw a small party . Think about the money you are saving by not going away . You ...
A.
Eat out for every meal!
B.
Go on a day trip to a nearby town, or to a beach ．
C.
But why not remain at home and enjoy a staycation?
D.
If you are on a staycation, you might get calls from work ．
E.
Most of the time it involves dining out more frequently than usual ．
F.
Make sure you all have fun, and when it is over, you feel refreshed ．
G.
The trick is to make sure your friends and coworkers know you are on a staycation ．
【单选题】When you are saving money, it is important to ______.
A.
spend as little as possible
B.
ask your parents to help you
C.
know what you are saving for
D.
have three places to keep the money
【简答题】三相负载的额定电压等于电源线电压时,应做()形连接,额定电压约等于电源线电压的 0.577 倍时,三相负载应做()形连接。按照这样的连接原则,两种连接方式下,三相负载上通过的电流和获得的功率()。
【简答题】脑膜炎奈瑟菌可引起 ,的病原体是 ,母亲是感染者时,新生儿可通过产道感染,引起 。
相关题目：