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【简答题】
I am an e-mail user.1. When I first started to use the e-mail system I used to read all my e-mail. I didn't have much mail. I was very excited about receiving any e-mail. I gave my friends my e-mail address. Soon I had more mail than I wanted. Some of the mail was junk mail ( 垃圾邮件 ). I was worried. I didn't want my mail to control me. 2. I've tried some methods to help me get control of my mail. First, I check my mail at the same time every day.3. Also I try to allow myself only 15-20 minutes every day to process my e-mail. This doesn't always work, but I try. Sometimes I save the messages. Sometimes I just read them, maybe answer a few, and then delete them. Sometimes I'm not at all interested in a message, so I don't even open it. I delete it right away. 4. This is very much the way I go through the mail that the postal service delivers to my home.
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举一反三
【单选题】which substance in body contains iron?
A.
hemoglobin
B.
opsin
C.
immunoglobin
D.
PTH
【单选题】Cu 2+ + Zn = Zn 2+ + Cu 中, 氧化剂是( )
A.
Cu 2+
B.
Zn
C.
Zn 2+
D.
Cu
【单选题】不是输电线路上采用三相快速自动重合闸应具备下列条件的是()。
A.
线路两侧都装设高频保护
B.
线路两侧都装设纵联差动保护
C.
线路两侧都装设距离保护
D.
线路两侧都装设快速空气断路器
【单选题】which substance in body contains iron?
A.
Hemoglobin
B.
Opsin
C.
Immunoglobin
D.
PTH
【单选题】青少年人群钙的适宜摄入量为_。
A.
800毫克
B.
1000毫克
C.
600毫克
D.
1200毫克
【单选题】以下关于字幕窗口制作运动字幕的描述正确的是( )。
A.
只可以制作匀速滚动的字幕
B.
纵向滚动字幕只可以从下至上运动
C.
横向游动字幕只可以从右至左运动
D.
可以随意调节滚动字幕的运动速率
【判断题】一般来说,若电路有n个节点,则用支路电流法列写的独立的KCL 方程为( n -1)个。
A.
正确
B.
错误
【单选题】自由下肢骨不包括以下哪块骨
A.
股骨
B.
胫骨
C.
髋骨
D.
距骨
【多选题】对Cu2+ +Zn   = Cu +Zn2+
A.
Cu2+是氧化剂
B.
Cu2+是氧化型
C.
Zn是还原剂
D.
Zn是还原型
【单选题】自由下肢骨不包括( )
A.
髋骨
B.
股骨
C.
胫骨
D.
腓骨
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