【单选题】分析X62W铣床主电路工作原理时,首先要看懂主轴电机M1的( )制动及冲动电路,然后再看进给电动机M2的正反转电路,最后看冷却泵电动机M3的电路。(A)Y~△启动电路 (B)能耗制动电路 (C)降压启动电路 (D)正反转电路
【单选题】P71 CONVERSATION 1.2
【单选题】Short Conversation 4. ( )
A.
She should repair the telephone herself
B.
She can turn to Mike for help.
C.
He knows nothing about telephone
D.
He will call the telephone company
【单选题】P71 CONVERSATION 1.3
【单选题】P71 CONVERSATION 1.1
【单选题】P71 CONVERSATION 1.4
【单选题】The teacher told the students to stay in the classroom and they did______.
【单选题】(conversation 1) 4.
A.
To have an unfortunate marriage.
B.
To be envious of other people.
C.
To praise a spouse unexpectedly.
D.
To say something negative about a spouse.
【简答题】请完成第十二章课后作业题1, 2,3,A组( 2, 4, 9) 。(手写后,以照片形式上传添加,提交至平台答案处,务必书写工整。)
【简答题】汪小兰第五版有机化学课后作业 第二章 2.2 a, c, e, f, g 2 .9, 2 .16 请将作业写在作业本上,拍照上传图片回答