问题
选择题
Holmes walked swiftly into the garden, _____ by Doctor Watson. [ ]
A. following
B. followed
C. was followed
D. to be followed
答案
答案：B
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Holmes walked swiftly into the garden, _____ by Doctor Watson. [ ]
A. following
B. followed
C. was followed
D. to be followed
答案：B
sin100πt （V）的 正弦交流电源，图中电流表内阻不计．副线圈接入“110V，60W”灯泡一只，且灯光正常发光．下列说法正确的是（ ）
/22 A