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【判断题】
握手时，精力要集中，双眼应注视对方的头顶，不要左顾右盼，上身要微微前倾，同时脸上要含笑向对方致意。()A.
正确
B.
错误
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皮皮学刷刷变学霸
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【单选题】.—Did you feel ______when you saw the old man moving the big stone? --Although he was over 70,_______ he was strong enough to move the heavy stone.
A.
surprised, /
B.
surprised, but
C.
surprising, but
D.
surprising, /
【简答题】定位轴限制工件的 1 个自由度。 定位轴用碳素工具钢 2 ,经热处理至 3 ~ 4 HRC;也可用优质碳素结构钢 5 经渗碳淬硬至 6 ~ 7 HRC。
【简答题】Did you see snow in your hometown last winter? Did you feel it was warmer than before? 'There have been 21 warm winters in China since 1986,' said scientists. They also said that in the past 100 years...
【单选题】Did you feel your should __ by his hand?
A.
touch
B.
touched
C.
to touch
D.
to be touched
【简答题】下列物质可以作为W/O型的乳化剂的是()A.硬脂酸钠B.三乙醇胺皂C.硬脂酸钙D.十二烷基硫酸钠A. 1 B. 1 C. 1 D. 1
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