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【判断题】
半圆或小于半圆的圆弧一般标注半径尺寸。
A.
正确
B.
错误
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举一反三
【简答题】听音,如果每组图画正确打“√”,否则打“×”。 (     ) 1. (     ) 2. (     ) 3.
【单选题】Some children have never seen a dentist before starting school.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】听音判断,对的打“√”,错的打“×”。 1. 2. 3. (     )                (     )                      (     )
【单选题】Before starting any diesel or gasoline engine, which of the following must be checked?____.
A.
Oil level
B.
Flow of cooling water
C.
Exhaust discharge
D.
All of the above
【简答题】听音,对的打“√”,错的打“×”。 1. 2. 3. 4. (     )               (     )                 (     )               (     )
【简答题】情景会话。情景适当的图打“√”,否则打“×”。 (     ) 1. (     ) 2. (     ) 3.
【单选题】Before starting an air compressor, It should be _____.
A.
unloaded
B.
primed
C.
filled with water
D.
greased
【简答题】听音,判断正误,对的打“√”,错的打“×”。 1. 2. 3. (     )                         (     )                    (     )
【简答题】听音,判断正确打“√”,错的打“×”。 1. 2. 3. 4. (     )               (     )               (     )               (     )
【单选题】Before starting, the cylinders and pistons must be warmed up ( ).
A.
quickly
B.
usual
C.
gradually
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