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【单选题】
[单选题]机床工作精度试验。车床切断试验主要是检验
A.
加工精度
B.
平面度
C.
锥度
D.
振动及振痕
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举一反三
【单选题】When the foreign guest arrived, I found him speaking good Chinese. I _______ his speech into Chinese the night before. [     ]
A.
needn't translate
B.
didn't need to translate
C.
needn't have translated
D.
didn't need translating
【单选题】博来霉素等抗肿瘤抗生素的主要作用机制是( )。
A.
干扰细菌细胞壁合成
B.
抑制细菌蛋白质合成
C.
抑制细菌核酸合成
D.
增加细菌胞浆膜通透性
【单选题】下列各选项中,即属于一次凭证又属于专用凭证的是( )
A.
购货发票
B.
银行收款通知
C.
领料单
D.
派工单
【单选题】( )的东巴文是一种兼备表意和表音成分的图画象形文字, 源于宗教典籍兼百科全书的《东巴经》。
A.
白族
B.
傣族
C.
纳西族
D.
哈尼族
【多选题】What does a room attendant say when she receives the complaint from the guest that his luggage hasn’t arrived?
A.
I am sorry to hear that, I am sure the bellman will send it up to you soon.
B.
I am sorry for bringing you the inconvenience. I will ask about the bellman immediately.
C.
Could you just wait? We are all busy today.
D.
I don’t know who is the one sending you
【单选题】Most of the guest()when he arrived at the party.
A.
left
B.
was left
C.
have left
D.
had left
【简答题】vi. 毕业 n. 毕业生
【单选题】求解生产与存储问题时,下列说法正确的是: ( )
A.
状态变量为期初存储量,决策变量为生产量
B.
阶段指标函数是从第k阶段到第n阶段的总成本
C.
过程指标函数是从第k阶段到下一阶段的总成本
D.
状态变量为需求量,决策变量为生产量
【简答题】Tom’s family was holding a larger evening party. It was to celebrate Tom’s 15th birthday. At about 6 o’clock, Jim ,Tom’s best friends , arrived with a big birthday gift. Tom opened it in front of Jim ...
【简答题】试推导如下图所示电网络系统的传递函数 U 2 ( s ) /U 1 ( s )
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