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【单选题】
SECTION C NEWS BROADCAST Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. At the end of each news item, you will be given 10 seconds to answer the questions. 听力原文： (6)A powerful explosion at a petrol station in the center of the Turkish eapital Ankara has injured more than a hundred people. Witnesses say the explosions happened as a tanker was discharging liquefied petroleum gas. As a series of explosions then hit the station, a vast fireball rose into the night sky. The station is situated in a residential part of the city, but the proximity of a wedding hall, apparently filled with celebrating guests, seems to be the reason that there have been so many injuries. The Turkish Health Minister went to the petrol station and told reporters there that over a hundred people had been injured, but that so far, had been no fatalities. Where did the explosion take place?A.
At a wedding hall.
B.
At a petrol station.
C.
In a downtown shopping center.
D.
Near the Turkish Health Ministry.
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【单选题】( )是银行确定的在一定时期内对某客户提供短期授信支持的量化控制指标,银行般要与客户签订授信协议。
A.
开证额度
B.
客户授信额度
C.
项目贷款承诺
D.
客户贷款承诺
【单选题】D 为镜头中心到被摄物体的距离, V 为被摄物体的垂直尺寸, v 为靶面成像的水平宽度,则估算所选镜头的焦距应为( )
A.
V/vD
B.
v/VD
C.
vD / V
D.
Vv/D
【单选题】D为镜头中心到被摄物体的距离，V为被摄物体的垂直尺寸，V为靶面成像的水平宽度，则估算所选镜头的焦距应为（）。
A.
V/vD
B.
v/VD
C.
vD/V
D.
vV/D
【简答题】叙述凯氏定氮法测定有机含氮药物的原理、硫酸、硫酸钾及硫酸铜的作用是什么?
【单选题】D为镜头中心到被摄物体的距离,V为被摄物体的垂直尺寸,v为靶面成像的水平宽度,则估算所选镜头的焦距应为( )。
A.
V/vD
B.
v/VD
C.
vD/V
D.
vV/D
【单选题】D为镜头中心到被摄物体的距离，V为被摄物体的垂直尺寸，υ为靶面成像的水平宽度，则估算所选镜头的焦距应为()。
A.
V/υD
B.
υ/VD
C.
υD/V
D.
υV/D
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