管道保护工每周对所辖管线全程巡线不少于（）
A.1次
B.2次
C.3次
D.5次
参考答案：B
—Tom doesn't speak English ______ his classmates.
—I agree with you. But his written work is wonderful. [ ]
A. as often as
B. as many as
C. as good as
D. as well as
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