问题
单项选择题
桅杆式起重机移动时，其底座应以足够的承重枕木排和滚杠，并将起重臂收紧处于移动方向的前方，倾斜不得超过（），移动时桅杆不得向后倾斜，收放缆风绳应配合一致。
A.10°
B.15°
C.20°
D.25°
答案
参考答案：A
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桅杆式起重机移动时，其底座应以足够的承重枕木排和滚杠，并将起重臂收紧处于移动方向的前方，倾斜不得超过（），移动时桅杆不得向后倾斜，收放缆风绳应配合一致。
A.10°
B.15°
C.20°
D.25°
参考答案：A
从方框中选用合适的词，并用其适当形式填空。
小题2:I went to HK for my holiday, and it was really a __________ trip. 小题3:Mother giant pandas often leave baby pandas for two whole days by _________. 小题4:Swimming is not as __________ as cycling. 小题5:He is as tall as his brother, but his brother is much _________ than he. |