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套筒滚子链常用的接头形式有 、 和 等。
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举一反三
【单选题】Dear, you need to by next week, to go to university at home or to go abroad.You are going on eighteen. OK, Mum. I am considering it.
A.
make an appointment     
B.
make a suggestion       
C.
make a decision
【单选题】门关闭后,门扇之间及门扇与立柱、门楣和地坎之间的间隙应尽可能小。由于磨损,间隙值允许达到()mm。
A.
4
B.
6
C.
8
D.
10
【单选题】EPIRB batteries must be clearly___with their expiry date,the serial number and the identification code
A.
written
B.
marked
C.
noted
D.
Notified
【单选题】—Would you like me to go to the dentist with you? —No, you______with me.
A.
need not to go
B.
need not go
C.
do not need go
D.
not need go
【判断题】门关闭后,门扇之间及门扇与立柱、门楣和地坎之间的间隙应尽可能小。
A.
正确
B.
错误
【单选题】EPIRB batteries must be clearly____ with their expiry date, the serial number and the identification code.
A.
noted
B.
written
C.
marked
D.
notified
【判断题】层门关闭后,门扇之间及门扇与立柱、门楣和地坎之间的间隙为12mm。
A.
正确
B.
错误
【单选题】载货电梯的层门关闭后,门扇之间及门扇与立柱、门楣和地坎之间的间隙应不大于( )mm。
A.
6
B.
10
C.
8
D.
12
【判断题】A serial number must be included in a certificate. ( )
A.
正确
B.
错误
【单选题】64, EPIRB batteries must be clearly____and the serial number identification code
A.
written IMN number
B.
marked with their expiry date
C.
noted with the ship name
D.
notified with the nationality
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