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【单选题】
下列措施中只能提高安全边际而不能降低盈亏临界点的是( )A.
提高单价
B.
增加销售量
C.
降低单位变动成本
D.
压缩固定成本开支
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反馈参考答案：
举一反三
【多选题】冬虫夏草子座头部横切面可见
A.
子座周围1列子囊壳
B.
子囊壳下半部埋于子座内
C.
子囊壳内有多数线形子囊
D.
每个子囊内有2~8个线形的子囊孢子
E.
具不育顶端(子座先端部分无子囊壳)。
【单选题】We would like very much to continue () business with you and are now awaiting your offer.
A.
to do
B.
doing
C.
of doing
D.
do
【单选题】在R-L-C串联的正弦交流电路中,调节其中电容C时,电路性质变化趋势为( )
A.
调大电容,电路的感性增强
B.
调大电容,电路的容性增强
C.
调小电容,电路的感性增强
【单选题】A budget is an estimation of the _______ and _______ over a specified future period of time.
A.
cost; expense
B.
revenue; expenses
C.
revenue; interest
【单选题】Which of the following is true of Paragraph 2?
A.
Public-sector unions arc prudent in taking actions.
B.
Education is required for public-sector union membership.
C.
Labor Party has long been fighting against public-sector unions.
D.
Public-sector unions seldom get in trouble for their actions.
【单选题】We()it very much that you've come to give us a timely ride. Otherwise we would miss the train.
A.
appreciate
B.
expect
C.
promise
【简答题】液压油的工作条件苛刻,因此要定期检查防止液压油污染,下列表述错误是:A. 对液压油和新油进行摇动，泡沫消失很慢，说明含水量多。
【单选题】在R-L-C串联的正弦交流电路中,调节其中电容C时,电路性质变化的趋势为( )。
A.
调大电容，电路的感性增强
B.
调大电容，电路的容性增强
C.
调小电容，电路的感性增强
【单选题】听力原文：M: Would you like a cup of tea? W: Only if it's not too much trouble. M: Do you like it with milk and sugar? W. Not too much milk and no sugar, please. What does the woman want with her tea?
A.
Milk.
B.
Sugar.
C.
Both milk and sugar.
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