[单项选择]As we are（）urgent need of Art.No.5609，please ship our order with out delay.
A. on
B. of
C. in
D. to

[单项选择]

For  (1) service, we need a virtual-circuit subnet. Let us see how that works. The idea behind virtual circuits is to avoid having to choose a new (2) for every packet sent. Instead,when a connection is established, a route from the(3) machine to the destination machine is chosen as part of the connection setup and stored in tables inside the (4) . That route is used for all traffic flowing over the connection, exactly the same way that the telephone system works.When the connection is released, the virtual circuit is also terminated. With connection-oriented service, each packet carries an (5) telling which virtual circuit it belongs to.

空白（1）处应选择（）
A. connectionless
B. connection-oriented
C. datagram
D. telegram

[名词解释]

英译中：Delivery EX ship(DES)

[单项选择]Who has responsi bilities to maintain the ship？（）

[单项选择]CIF Ex Ship’s Hold与DES相比，买方承担的风险（）。
A. 前者大
B. 两者相同
C. 后者大
D. 买方不承担任何风险

[单项选择]We all gather facts and （） conclusions, but we have very different styles of thinking.
A. pull
B. draw
C. take
D. receive

[单项选择]We have received your letter of September 12，（）we are glad to know that you are interested in our electric heaters.
A. which
B. atwhich
C. fromwhich
D. inwhich

[单项选择]With this（）mind，we are writing to inquire if we could now begin discussing the question of sole agency.
A. in
B. on
C. at
D. inside

[单项选择]（）we would like to assist you，we do not think there is room for a reduction in our price.
A. Even
B. As
C. Much
D. Much as

[单项选择]With this（）mind, we are writing to inquire if we could now begin discussing the question of sole agency.
A. in
B. on
C. at
D. inside

[单项选择]

We have made（）that we would accept D/P terms for your present order.

A. clear
B. it is clear
C. that clear
D. it clear

[单项选择]We are pleased to say that we are（）to supply you（）the goods you want.
A. of a position，──
B. at a position，──
C. in a position，with
D. at a position，with