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【单选题】
粗研磨，配制400g研磨剂时，硬脂酸要加入（）。A.
10g
B.
16g
C.
26g
D.
36g
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皮皮学刷刷变学霸
举一反三
【单选题】She has a headache because she _______too long. She ought to have a rest.
A.
has been reading
B.
had read
C.
is reading
D.
read
【单选题】She was so angry at ________ he was doing ________she walked out．and closed the door
A.
6． She was so angry at ________ he was doing ________she walked out．and closed the door heavily behind her． A． what that
B.
that what
C.
that that
D.
what what
【单选题】Pollution regulations require that each scupper in an enclosed deck area have a( )。
A.
two-piece soft patch
B.
wooden plug
C.
mechanical means of closing
D.
soft rubber plug
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