人体活动主要的直接供能物质是()。
A. 葡萄糖
B. 脂肪酸
C. 磷酸肌酸
D. ATP
下列哪种酶缺乏可引起蚕豆病？()
A. 内酯酶
B. 转酮基酶
C. 6-磷酸葡萄糖脱氢酶
D. 磷酸戊糖差向酶
The captain ______ this salvage contract as the representative of the owners of vessel and
A. writes down
B. enters into
C. takes note
D. works off
A vessel towing astern in an operation which severely restricts the towing vessel and her
A. the masthead lights for a towing vessel
B. the lights for a vessel restricted in its ability to maneuver
C. sidelights，stern light and towing light
D. All of the above
微信支付 
支付宝支付