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【单选题】
FX3U—48MR型PLC可用的最大输出继电器编号为Y( )。A.
10
B.
15
C.
17
D.
27
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举一反三
【单选题】Dad ______ from his paper and smiled when I entered the living room. [ ]
A.
looked after
B.
looked for
C.
looked down
D.
looked up
【简答题】He looked in his fine tailcoat accompanied with sports shoes.
【单选题】玻璃幕墙中铝合金型材硬度的检验,应采用韦氏硬度计测其表面硬度。型材表面的涂层应清除干净,测点不应少于( )个,并应以至少3点的测量值取其( )。
A.
3、最小值
B.
3、平均值
C.
5、平均值
D.
5、最小值
【单选题】He _____ his sister at home because his parents went to Tongren. [ ]
A.
looked after
B.
looked for
C.
looked at
D.
looked like
【简答题】植物根尖从下往上可分为( )、( )、( )和( )四个区域。吸收水分和无机盐最活跃的区域是( )。
【单选题】He put his hands into his pockets and then shrugged his shoulders.
A.
他将手放进衣袋,然后耸了耸肩
B.
他将手放进他的衣袋,然后耸了耸他的肩
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