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听力原文：M: Hello, Miss Jones. This is Ian from Wi-Fi Neighbors. I've followed up on the trouble you've been having accessing our Internet service provider, and basically, I think the problem is at your end. W: But I've already been without my Internet service for the whole morning now. I'm going to have to find Internet access soon to make a deadline. M: I have already put in a request for a technician to visit your office, but I'm afraid I can't tell you exactly when he will arrive. W: All right. Can you give the technician my cell phone number? I'm going to an Internet cafe just down the road to e-mail these documents. Please have him call me as soon as he reaches my office. Why is the man calling?
A.
To sell the woman Internet service.
B.
To ask for a technician.
C.
To ask for some documents.
D.
To fix the woman's Internet connection.
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【简答题】图示为一台小型发电机的示意图 , 矩形线圈在匀强磁场中绕 OO' 轴匀速转动 , 磁场方向与转轴垂直。矩形线圈的面积 S= 2 . 0 × 10 - 2 m 2 , 匝数 N= 40, 线圈电阻 r= 1 . 0 Ω, 磁场的磁感应强度 B= 0 . 20 T 。线圈绕 OO' 轴以 ω= 100 rad / s 的角速度匀速转动。线圈两端外接电阻 R= 9 . 0 Ω 的小灯泡和一个理想交流电流...
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【单选题】What do the two persons want to do?
A.
To drink a lot of liquids.
B.
To stay at home.
C.
To stay at home to spare the heat.
D.
To stand this kind of scorching heat.
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【多选题】起重伤害事故的特点( )
A.
事故大型化、群体化
B.
事故类型集中
C.
事故后果严重
D.
伤害范围广
E.
随机发生率高
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【简答题】听下面一段材料，回答第1-4小题。 1. How many persons were there in the room when someone was knocking at the door? [     ] A. One person. B. Two persons. C. Three persons. 2. What did the young man wear? [     ] A. ...
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【单选题】一个矩形线圈在匀强磁场中绕垂直于磁感线的轴匀速转动,穿过线圈的磁通量随时间变化的图象如图 9 甲所示,则下列说法中正确的是 ( )
A.
． t ＝ 0 时刻，线圈平面与中性面垂直
B.
． t ＝ 0.01 s 时刻， Φ 的变化率最大
C.
． t ＝ 0.02 s 时刻，交变电动势达到最大
D.
．该线圈产生的相应交变电动势的图象如图乙所示
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【判断题】起重伤害事故的特点：事故大型化、群众化。一起事故有时涉及多人，并可能伴随大面积设备设施的损坏。
A.
正确
B.
错误
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【判断题】高层建筑的火灾特点是：火势蔓延快、危害严重、疏散困难、易造成重大伤亡事故、扑救难度大、功能复杂、起火因素多。
A.
正确
B.
错误
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【简答题】听材料，回答问题。 1. How many persons are going to see Betty off at the airport? [     ] A. Only one. B. Two. C. Three. 2. Where will Betty stay in Guangzhou? [     ] A. In a hotel. B. In her brother's home. ...
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【简答题】Two persons start from the same location O and walk around a square in opposite directions with constant speeds. The square is 30m by 30m. A’s speed is 2m/s and B’s speed is 1m/s. Find the coordinates...
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【单选题】下面（）不是起重伤害事故的特点
A.
事故大型化、群体化
B.
事故后果严重
C.
随机发生率低
D.
事故类型集中
查看完整题目与答案
相关题目：
【简答题】图示为一台小型发电机的示意图 , 矩形线圈在匀强磁场中绕 OO' 轴匀速转动 , 磁场方向与转轴垂直。矩形线圈的面积 S= 2 . 0 × 10 - 2 m 2 , 匝数 N= 40, 线圈电阻 r= 1 . 0 Ω, 磁场的磁感应强度 B= 0 . 20 T 。线圈绕 OO' 轴以 ω= 100 rad / s 的角速度匀速转动。线圈两端外接电阻 R= 9 . 0 Ω 的小灯泡和一个理想交流电流...
查看完整题目与答案
【单选题】What do the two persons want to do?
A.
To drink a lot of liquids.
B.
To stay at home.
C.
To stay at home to spare the heat.
D.
To stand this kind of scorching heat.
查看完整题目与答案
【多选题】起重伤害事故的特点( )
A.
事故大型化、群体化
B.
事故类型集中
C.
事故后果严重
D.
伤害范围广
E.
随机发生率高
查看完整题目与答案
【简答题】听下面一段材料，回答第1-4小题。 1. How many persons were there in the room when someone was knocking at the door? [     ] A. One person. B. Two persons. C. Three persons. 2. What did the young man wear? [     ] A. ...
查看完整题目与答案
【单选题】一个矩形线圈在匀强磁场中绕垂直于磁感线的轴匀速转动,穿过线圈的磁通量随时间变化的图象如图 9 甲所示,则下列说法中正确的是 ( )
A.
． t ＝ 0 时刻，线圈平面与中性面垂直
B.
． t ＝ 0.01 s 时刻， Φ 的变化率最大
C.
． t ＝ 0.02 s 时刻，交变电动势达到最大
D.
．该线圈产生的相应交变电动势的图象如图乙所示
查看完整题目与答案
【判断题】起重伤害事故的特点：事故大型化、群众化。一起事故有时涉及多人，并可能伴随大面积设备设施的损坏。
A.
正确
B.
错误
查看完整题目与答案
【判断题】高层建筑的火灾特点是：火势蔓延快、危害严重、疏散困难、易造成重大伤亡事故、扑救难度大、功能复杂、起火因素多。
A.
正确
B.
错误
查看完整题目与答案
【简答题】听材料，回答问题。 1. How many persons are going to see Betty off at the airport? [     ] A. Only one. B. Two. C. Three. 2. Where will Betty stay in Guangzhou? [     ] A. In a hotel. B. In her brother's home. ...
查看完整题目与答案
【简答题】Two persons start from the same location O and walk around a square in opposite directions with constant speeds. The square is 30m by 30m. A’s speed is 2m/s and B’s speed is 1m/s. Find the coordinates...
查看完整题目与答案
【单选题】下面（）不是起重伤害事故的特点
A.
事故大型化、群体化
B.
事故后果严重
C.
随机发生率低
D.
事故类型集中
查看完整题目与答案
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