皮皮学，免费搜题
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【多选题】
永磁同步电动机具有( )特点。
A.
结构简单运行可靠
B.
可用于无机房电梯
C.
调速范围宽
D.
恒转矩
E.
运行电流小
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【单选题】All ships other than gazetted mail ships， arriving within 5 days of departure from a smallpox infected port， or from a plaque infected territory， should ________ health clearance at quarantine anchora...
A.
wait
B.
await
C.
await for
D.
be awaited
查看完整题目与答案
【单选题】which of the following ships may not complying with the SOLAS Convention?
A.
Passenger ships sailing on international waters but less than 300 tons
B.
Passenger ships sailing on international waters
C.
Cargo ships of 300 gross tonnage and upwards
D.
Cargo ships less than 300 gross tonnage
查看完整题目与答案
【单选题】Some ships have special duties, such as（）（驳船）.
A.
liquid cargo ships
B.
general cargo ships
C.
barges
D.
tugs
查看完整题目与答案
【单选题】Ships with priority inspection for PSCO do not include_______.
A.
ships visiting the port for the first time
B.
vulnerable types of ships
C.
ships with previous records of detention
D.
ships with satisfied data records
查看完整题目与答案
【多选题】电阻器的主要单位是欧姆,下列是电阻器单位的是( )
A.
MΩ
B.
kΩ
C.
μF
D.
nF
查看完整题目与答案
【单选题】甲醛、丁醛、丙酮、苯乙酮亲核加成反应活性次序是( )
A.
甲醛>丁醛>丙酮>苯乙酮
B.
甲醛>丙酮>苯乙酮>丁醛
C.
丙酮>苯乙酮>甲醛>丁醛
D.
甲醛>丁醛>苯乙酮>丙酮
查看完整题目与答案
【单选题】What kinds of ships may not comply with SOLAS convention?
A.
Cargo ships less than 300 tons
B.
Cargo ships more than 300 tons
C.
Passenger ships sail on international service
D.
B&C
查看完整题目与答案
【简答题】2-42 十六进制数AB.CH对应的十进制数字是__________。
查看完整题目与答案
【多选题】电阻器的主要单位是欧姆,下列是电阻器单位的是( )
A.
μF
B.
kΩ
C.
MΩ
D.
nF
查看完整题目与答案
【单选题】LNG and LPG ships ___.
A.
are obsolete
B.
cannot compete with container ships
C.
often operate on long-term contracts
D.
All of the above
查看完整题目与答案
相关题目：
【单选题】All ships other than gazetted mail ships， arriving within 5 days of departure from a smallpox infected port， or from a plaque infected territory， should ________ health clearance at quarantine anchora...
A.
wait
B.
await
C.
await for
D.
be awaited
查看完整题目与答案
【单选题】which of the following ships may not complying with the SOLAS Convention?
A.
Passenger ships sailing on international waters but less than 300 tons
B.
Passenger ships sailing on international waters
C.
Cargo ships of 300 gross tonnage and upwards
D.
Cargo ships less than 300 gross tonnage
查看完整题目与答案
【单选题】Some ships have special duties, such as（）（驳船）.
A.
liquid cargo ships
B.
general cargo ships
C.
barges
D.
tugs
查看完整题目与答案
【单选题】Ships with priority inspection for PSCO do not include_______.
A.
ships visiting the port for the first time
B.
vulnerable types of ships
C.
ships with previous records of detention
D.
ships with satisfied data records
查看完整题目与答案
【多选题】电阻器的主要单位是欧姆,下列是电阻器单位的是( )
A.
MΩ
B.
kΩ
C.
μF
D.
nF
查看完整题目与答案
【单选题】甲醛、丁醛、丙酮、苯乙酮亲核加成反应活性次序是( )
A.
甲醛>丁醛>丙酮>苯乙酮
B.
甲醛>丙酮>苯乙酮>丁醛
C.
丙酮>苯乙酮>甲醛>丁醛
D.
甲醛>丁醛>苯乙酮>丙酮
查看完整题目与答案
【单选题】What kinds of ships may not comply with SOLAS convention?
A.
Cargo ships less than 300 tons
B.
Cargo ships more than 300 tons
C.
Passenger ships sail on international service
D.
B&C
查看完整题目与答案
【简答题】2-42 十六进制数AB.CH对应的十进制数字是__________。
查看完整题目与答案
【多选题】电阻器的主要单位是欧姆,下列是电阻器单位的是( )
A.
μF
B.
kΩ
C.
MΩ
D.
nF
查看完整题目与答案
【单选题】LNG and LPG ships ___.
A.
are obsolete
B.
cannot compete with container ships
C.
often operate on long-term contracts
D.
All of the above
查看完整题目与答案