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【多选题】
CNC系统是由 () 、() 、计算机数控装置,伺服系统和PLC等组成的。
A.
输入
B.
输出
C.
CRT
D.
DNC
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【单选题】现行部颁概算定额中,其他机械费是以费率%.形式表示,其计算基数为( )。
A.
主要材料之和
B.
人工费、主要材料费之和
C.
人工费、机械费之和
D.
主要机械费之和
【简答题】阅读理解。 Jim likes playing in a river, But there isn't a river near his new house. He isn't very happy. One day, he asks his mother,'Is there a river near here?' 'No, there isn't.' his mother says,'But o...
【单选题】Part B Directions: You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each ques...
A.
To protect persons and property.
B.
To collect taxes.
C.
To teach and train citizens.
D.
To save natural resources for future use.
【单选题】--Isn't that Dick playing football?--It ______ be. He got his leg broken yesterday.
A.
can't
B.
mustn't
C.
rather not
D.
wouldn't
【单选题】“ Isn’t that Tom playing basketball?” “ It ______ be; he fell off the ladder yesterday and got badly hurt.”
A.
mustn’t
B.
would rather not
C.
couldn’t
D.
wouldn’t
【单选题】— Your son isn't going with you, is he? — No. He ______ to stay at home playing computer games. [     ]
A.
decided
B.
decides
C.
is deciding
D.
will decide
【单选题】Background:The chief officer and bosun is talking about something, at this time, the captain goes to bridge. S1:Morning, Chief.S2:Morning, captain.S1:What are you talking about?S2:We are talking a...
A.
Pay close attention to the storm's development.
B.
Check the navigational system.
C.
Monitor the barometer continuously.
D.
Monitor the storm warning continuously.
【简答题】let arr=['a', 'b'] for (let index of arr.keys()) { console.log(index); } for (let elem of arr.values()) { console.log(elem); } for (let [index, elem] of arr.entries()) { console.log(index, elem); }
【单选题】he's athletic,  he isn't' good at playing basketball. [     ]
A.
Because
B.
Though
C.
For
D.
But
【简答题】let { keys , values , entries } = Object ; let obj = { a: 1 , b: 2 , c: 3 }; for ( let key of keys ( obj )) { console . log ( key ); for ( let value of values ( obj )) { console . log ( value ); } for...
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