皮皮学，免费搜题
登录
搜题
【简答题】
我国低压配电的相电压、线电压、工频分别是( )。 A 、220V 380V、60Hz B、 220V、380V、85Hz C 、220V、380V、50Hz D 、380V、220V、50Hz
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【单选题】All people, whether they be rich or poor, strong or weak, privileged or deprived ,are interdependent ,and ________ the common task of seeking to achieve mankind’s full potential.
A.
share in
B.
bring in
C.
take in
D.
call in
【多选题】以下关于机械台班消耗定额的说法错误的是( )
A.
机械台班消耗定额包括有效工作时间、不可避免的中断时间和不可避免的空转时间等
B.
机械台班消耗定额有机械时间定额和机械产量定额两种表达形式
C.
机械时间定额与机械产量定额的乘积不等于1
D.
施工机械台班产量定额=机械1h纯工作正常生产率×工作纯工作时间×机械正常利用系数
E.
时间定额的单位是“台班”，一个台班是一台机械工作8个小时
【简答题】阅读理解 More than half of rich Americans have not shown their full wealth to their children, a new survey showed last Tuesday. The survey, published by the Bank of America, studied the rich with $ 3 mill...
【单选题】The boy didn't stop crying he saw his mother. A. when B. until C. since D. after
A.
1
B.
2
C.
3
D.
4
【简答题】The boy looked up timidly at his father who was sitting next to him, but he didn't stop crying. ______ anything, his crying became more intense.
【单选题】The boy looked up timidly at his father who was sitting next to him, but he didn't stop crying. __________, his crying became more intense.
A.
If nothing
B.
If not
C.
If everything
D.
If anything
【单选题】All people, whether they be rich or poor, strong or weak, privileged or deprived, are interdependent, and _____ the common task of seeking to achieve mankind’s full potential.
A.
share in
B.
take with
C.
take on
D.
turn on
【单选题】All people, whether they be rich or poor, strong or weak, privileged or deprived,are interdependent, and _______ the common task of seeking to achieve mankind's full potential.
A.
turn down
B.
think over
C.
live on
D.
share in
【简答题】在文克勒弹性地基分析中,划分有限长梁是依据()确定,若条形基础的该项值为2.78,试问该条形基础应按()计算。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
