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【单选题】
工作表Sheet1、Sheet2均设置了打印区域,当前工作表为Sheet1,执行“打印”操作后,在默认状态下将打印( )。A.
Sheet1中的打印区域
B.
Sheet1中键入数据的区域和设置格式的区域
C.
在同一页打印Sheet1、Sheet2中的打印区域
D.
在不同页打印Sheet1、Sheet2中的打印区域
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【单选题】136 You have been assigned as a project leader and must first review the statement of work provided by the customer. Which of the following is most often overlooked?
A.
Data item deliverables
B.
Customer-furnished equipment and facilities
C.
Long-lead procurement items
D.
Customer-imposed milestones
E.
Other subcontractor interface requirements
【单选题】属于疫苗接种异常反应的是
A.
疫苗本身特性引起的接种后一般反应
B.
疫苗质量不合格
C.
接种单位违反预防接种工作规范
D.
合格疫苗在实施规范接种过程中造成机体器官功能损害
E.
受种者在接种时正处于某种疾病的潜伏期或前驱期，接种后偶合发病
【单选题】单相桥式全控整流电路，大电感负载，电感量足够大。已知U2＝100V，R＝2Ω，当【图片】时，整流输出平均电流值为（ ）
A.
38.97A
B.
77.94
C.
50
D.
41.98
【单选题】You have been assigned as a project leader and must first review the statement of work provided by the customer. Which of the following is most often overlooked?
A.
Data item deliverables
B.
Customer-furnished equipment and facilities
C.
Long-lead procurement items
D.
Customer-imposed milestones
E.
Other subcontractor interface requirements
【多选题】单相桥式全控整流电路,负载R=2 Ω ,L很大,反电动势E=60V,U2=100V, α =30度,输出的电压为( )、电流为( )。
A.
78V
B.
9A
C.
84V
D.
39A
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