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【单选题】
关于电喇叭的调整,下述()的说法是不正确的。A.
改变铁芯气隙，可以改变喇叭发音音调
B.
铁芯气隙越大，音调越高；反之，音调越低
C.
螺旋形电喇叭铁芯气隙，低音喇叭为1.0～1.3mm；高音喇叭为0.9～1.1mm
D.
改变触点压力可以改变音量
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【单选题】He was determined to sail around the world ______ his illness and old age.
A.
given
B.
although
C.
despite
D.
in spite
【简答题】高炉的基本操作制度包括哪几种?
【简答题】改错。 1. He often goes shopping and his mother. 2. He came here at the age of he was seven years old. _____ _____
【简答题】高炉基本操作的制度包括：（）制度、（）制度、（）制度、（）制度。
【单选题】Timmy was only 11 years old, but he is already 1.7 meters tall. He is too tall __________ his age, I think.
A.
at
B.
in
C.
about
D.
for
【单选题】He meant that you are old _______ your age _______ saying 'the guy is overgrowing'. [ ]
A.
for, by
B.
for, as to
C.
with, about
D.
to, by
【简答题】20日,从红光工厂购入的D材料5000千克到达,并已验收入库。
【简答题】20日,从红光工厂购入的D材料5000千克到达,并已验收入库。
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