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【简答题】
1988年美国首先推出了一个数字传输标准SONET中文名称是(),ITU-T以美国标准SONET为基础,制定出国际标准SDH,其中文名称是()。
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反馈参考答案：
举一反三
【单选题】What is the first decision you should make in preparing to apply for a place at a university?
A.
How much you can afford to pay.
B.
What course you are going to choose.
C.
Which university you are going to apply to.
D.
When you are going to submit your application.
【多选题】下面那些性爱辅助措施会对身体健康造成不良影响？
A.
经常忍住射精，从而达到延长性交时间的效果
B.
经常使用各种助情药（俗称“春药”）
C.
吸烟饮酒有助于提高性欲
D.
正确使用一些性工具，如常见的自慰器。
【多选题】下面那些性爱辅助措施会对身体健康造成不良影响?
A.
忍住射精，从而达到延长性交时间的效果
B.
助情药（俗称“春药”）
C.
适量饮酒，有助于提高性欲
D.
正确使用一些性工具，如常见的自慰器。
【单选题】What is the first decision you should make in preparing to apply for a place at university?
A.
How much you can afford to pay.
B.
What course you are going to choose.
C.
Which university you are going to apply to.
D.
When you are going to submit your application.
【多选题】下面哪些性爱辅助措施会对身体健康造成不良影响?
A.
忍住射精,从而达到延长性交时间的效果
B.
助情药(俗称“春药”)
C.
适量饮酒,有助于提高性欲
D.
正确使用一些性工具,如常见的自慰器。
【单选题】The terrorists had ____ their prisoner in a small room, however they had not chained him to the wall
A.
restrained
B.
refined
C.
confined
D.
restricted
【单选题】When using a handheld hacksaw, you should apply pressure only on the forward stroke ____
A.
only when cutting thin wall tubing
B.
only when cutting carbon steel
C.
only when cutting conduit
D.
at all times
【单选题】So sudden _____________ that the terrorists had no time to escape.
A.
was the attack
B.
the attack did
C.
did the attack
D.
the attack was
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