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【简答题】
选出各个句子中划线单词黑体部分的字母发音与其他划线单词黑体部分的字母不同的一项。 (     ) 1. The y ou ng man said he w ou ld like to live in the c ou ntry with his c ou sin . A                          B                                 C                     D (     ) 2. Mike stopp ed his work and look ed out of the window. A                             B Then he watch ed the street carefully to see what had happen ed . C                                                             D (     ) 3. I r ea d the book about ea stern food in Asia in the r ea ding -room last w ee k . A                              B                                    C                       D (     ) 4. Th ere's ano th er TV play which I would ra th er see on Th ursday . A           B                                           C                   D (     ) 5. Me n 's ha n ds and fi n gers are so big that they aren't fit for this ki n d of job. A        B              C                                                           D
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举一反三
【判断题】活塞式压缩机级数越多,经济性能越好。
A.
正确
B.
错误
【单选题】一轴晶光率体斜交光轴的切面为()切面。
A.
圆形
B.
椭圆
C.
长方形
D.
菱形
【单选题】Foam extinguishes a fire by().
A.
smothering the burning material
B.
chemical combination with burning material
C.
absorbing the burning material
D.
organic destruction of the burning material
【判断题】活塞式压缩机级数越多,经济性越好。
A.
正确
B.
错误
【单选题】Foam extinguishes a fire by().
A.
shutting off the air supply
B.
cooling the fuel to below ignition temperature
C.
dispersing the fuel
D.
removing the source of ignition
【多选题】关于箱形截面的凹陷铰折,( )的说法是正确的。
A.
箱形截面的顶部和底部表面会同时有凹陷
B.
板件两侧受到拉伸
C.
板件两侧受到压缩
D.
铰折中顶部金属受到的损伤比底部金属要大
【单选题】Foam extinguishes a fire by().
A.
shutting off the air supply
B.
cooling the fule to below ignition temperature
C.
dispersing the fuel
D.
removing the source of ignition
【单选题】C02 extinguishes a fire by___________.
A.
a blanket of bubbles formed on the surface of the fire
B.
smothering
C.
cooling
D.
isolating the heat from the fuel
【判断题】电容器、电感器工作在不同频率时的等效电路不同,工作在低频时宜采用电桥法测量其参数、工作在高频时宜采用Q表法测量其参数。( )
A.
正确
B.
错误
【多选题】关于箱形截面的凹陷铰折,哪个说法是正确的
A.
箱形截面的顶部和底部表面会同时有凹陷
B.
板件两侧受到拉伸
C.
板件两侧受到压缩
D.
铰折中顶部金属受到的损伤比底部金属要大
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