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【单选题】
在卧式铣床上用平口钳装夹铣削垂直面时,下列( )装夹措施对垂直度要求最有效。A.
在活动钳口垫上一根圆棒
B.
对平口钳底座进行修磨
C.
对安装好后的钳口进行铣削
D.
底部垫一块高精度的垫铁
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【单选题】当航线上的水深对船舶吃水有限制时,船舶的最大吃水应根据 等因素确定。I总吨;II水域水密度的变化;III潮高;IV航道基准水深;V富裕水深;VI航行途中油水消耗
A.
Ⅱ、Ⅳ、Ⅴ、Ⅵ
B.
Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ
C.
Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ
D.
Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ
【简答题】It was midday when I got the call that my grandfather was not well and he was quickly getting worse. My family did not know how long he would in the world. I knew I had to get to the hospital to tell ...
【单选题】当航线上的水深对船舶吃水有限制时,船舶的最大吃水应根据()等因素确定。 1总吨;2水域水密度的变化;3过浅时的航道水深;4富余水深;5航行途中油水消耗。
A.
②④⑤⑥
B.
①③④⑤
C.
②③④⑤
D.
①②③④
【简答题】It was midday when I got the call that my grandfather was not well and he was quickly getting worse. My family did not know how long he would stay in the world. I knew I had to get to the hospital to ...
【单选题】当航线上的水深对船舶吃水有限制时，船舶的最大吃水应根据（）等因素确定。 ①总吨；②水域水密度的变化；③过浅时的航道水深；④富余水深；⑤航行途中油水消耗。
A.
②④⑤⑥
B.
①③④⑤
C.
②③④⑤
D.
①②③④
【单选题】I didn’t know when he _____ back. He said he would call me when he _____ home.
A.
would come, got
B.
came, got
C.
will come, gets
D.
came, would get
【单选题】He hasn't got any hobbies—_______ you call watching TV a hobby. [ ]
A.
If
B.
Unless
C.
When
D.
Since
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