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【多选题】
以下多种渠道形式中属于非正式渠道的是( )
A.
单线式沟通
B.
水平沟通
C.
偶然式沟通
D.
纵向沟通
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参考答案:
举一反三
【单选题】—Will you go to Japan for travelling on time after the earthquake? —____________.
A.
Watch out
B.
I’m afraid not
C.
I see, thanks
D.
All right.
【判断题】WLAN 中威力处理冲突,MAC层采用了CSMA/CA机制。
A.
正确
B.
错误
【单选题】听力原文:W: Are these treatments really necessary? They don't seem to help much. M: I'm afraid so, Mrs. Jones. Just be patient and I'm sure you'll see some results soon. Q: Where did this conversation mos...
A.
In a doctor's office.
B.
In a professor's office.
C.
In a lawyer's office.
D.
In a businessman's office.
【单选题】具有有二苯并氮䓬结构的抗药物是( )
A.
卡马西平
B.
苯巴比妥
C.
地西泮
D.
苯妥英钠
【判断题】专门的语言教育活动支持幼儿活动主体地位,为幼儿提供与语言进行充分互动的环境。
A.
正确
B.
错误
【单选题】电路如图所示,运算放大器的最大输出电压为±12V,为了使灯HL亮,输入电压u i 应满足()。
A.
u i >0
B.
u i =0
C.
u i <0
D.
任意数值
【单选题】—Do you think it will rain tomorrow. —_____. We'll go on a picnic tomorrow. [     ]
A.
I hope not
B.
I'm afraid so
C.
I hope so
【简答题】变间隙电容传感器的测量电路为运算放大器电路,如图所示。 C 0 =200 pF ,传感器的起始电容量 C x0 =20pF , 定动极板距离 d 0 = 1.5mm , 运算放大器为理想放大器(即 K →∞, Z i →∞), R f 极大,输入电压 u 1 =5 sinω t V 。 求当电容传感动极板上输入一位移量△ x = 0.15mm 使 d 0 减小时,电路输出电压 u 0 为多少? 变...
【单选题】如果负载要求切换频率非常快,则不能选用哪种输出接口电路?
A.
继电器型
B.
晶体管型
C.
晶闸管型
D.
以上都不能
【单选题】— It only takes me 20 minutes to get here by bike. Why don’t you ride a bike as I do?—     . I’m afr
A.
— It only takes me 20 minutes to get here by bike. Why don’t you ride a bike as I do? — ____. I’m afraid I’ll have to ride a bike. A.I agree
B.
I’d like to
C.
I don’t think so
D.
It’s not so easy
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