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搜题
【单选题】
结构动力学 忽略杆的轴向变形,图 6所示体系的振动自由度分别为______。A.
1，4
B.
2，1
C.
2，2
D.
3，4
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皮皮学刷刷变学霸
举一反三
【单选题】---I’ve lost my wallet and my I.D card.---_____ to hear that
A.
I’m glad
B.
I’m sorry
C.
I’m going
D.
Nice
【多选题】People usually say:” I’ve got bad ___ on the phone. ” when they can not hear clearly ( )
A.
reception
B.
signal
C.
connection
D.
phone
【单选题】—What do you think of the four classics(名著) of China? —I hear they are wonderful, but I’ve read _____ of them.
A.
all
B.
both
C.
neither
D.
none
【简答题】I’ve ________ (刚刚) known about it. Sorry to hear that.
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